diff --git a/gui_data/saved_ensembles/saved_ensembles_go_here.txt b/gui_data/saved_ensembles/saved_ensembles_go_here.txt
new file mode 100644
index 0000000..92b9d07
--- /dev/null
+++ b/gui_data/saved_ensembles/saved_ensembles_go_here.txt
@@ -0,0 +1 @@
+saved_ensembles_go_here
\ No newline at end of file
diff --git a/gui_data/saved_settings/saved_settings_go_here.txt b/gui_data/saved_settings/saved_settings_go_here.txt
new file mode 100644
index 0000000..b213857
--- /dev/null
+++ b/gui_data/saved_settings/saved_settings_go_here.txt
@@ -0,0 +1 @@
+saved_settings_go_here
\ No newline at end of file
diff --git a/gui_data/sv_ttk/__init__.py b/gui_data/sv_ttk/__init__.py
new file mode 100644
index 0000000..b265472
--- /dev/null
+++ b/gui_data/sv_ttk/__init__.py
@@ -0,0 +1,61 @@
+from pathlib import Path
+
+inited = False
+root = None
+
+
+def init(func):
+    def wrapper(*args, **kwargs):
+        global inited
+        global root
+
+        if not inited:
+            from tkinter import _default_root
+
+            path = (Path(__file__).parent / "sun-valley.tcl").resolve()
+
+            try:
+                _default_root.tk.call("source", str(path))
+            except AttributeError:
+                raise RuntimeError(
+                    "can't set theme. "
+                    "Tk is not initialized. "
+                    "Please first create a tkinter.Tk instance, then set the theme."
+                ) from None
+            else:
+                inited = True
+                root = _default_root
+
+        return func(*args, **kwargs)
+
+    return wrapper
+
+
+@init
+def set_theme(theme):
+    if theme not in {"dark", "light"}:
+        raise RuntimeError(f"not a valid theme name: {theme}")
+
+    root.tk.call("set_theme", theme)
+
+
+@init
+def get_theme():
+    theme = root.tk.call("ttk::style", "theme", "use")
+
+    try:
+        return {"sun-valley-dark": "dark", "sun-valley-light": "light"}[theme]
+    except KeyError:
+        return theme
+
+
+@init
+def toggle_theme():
+    if get_theme() == "dark":
+        use_light_theme()
+    else:
+        use_dark_theme()
+
+
+use_dark_theme = lambda: set_theme("dark")
+use_light_theme = lambda: set_theme("light")
diff --git a/gui_data/sv_ttk/sun-valley.tcl b/gui_data/sv_ttk/sun-valley.tcl
new file mode 100644
index 0000000..0296669
--- /dev/null
+++ b/gui_data/sv_ttk/sun-valley.tcl
@@ -0,0 +1,49 @@
+# Copyright © 2021 rdbende <rdbende@gmail.com>
+
+source [file join [file dirname [info script]] theme dark.tcl]
+
+option add *tearOff 0
+
+proc set_theme {mode} {
+	if {$mode == "dark"} {
+		ttk::style theme use "sun-valley-dark"
+
+		array set colors {
+		    -fg             "#F6F6F7"
+		    -bg             "#0e0e0f"
+		    -disabledfg     "#F6F6F7"
+		    -selectfg       "#F6F6F7"
+		    -selectbg       "#003b50"
+		}
+        
+        ttk::style configure . \
+            -background $colors(-bg) \
+            -foreground $colors(-fg) \
+            -troughcolor $colors(-bg) \
+            -focuscolor $colors(-selectbg) \
+            -selectbackground $colors(-selectbg) \
+            -selectforeground $colors(-selectfg) \
+            -insertwidth 0 \
+            -insertcolor $colors(-fg) \
+            -fieldbackground $colors(-selectbg) \
+            -font {"Century Gothic" 10} \
+            -borderwidth 0 \
+            -relief flat
+
+        tk_setPalette \
+        	background [ttk::style lookup . -background] \
+            foreground [ttk::style lookup . -foreground] \
+            highlightColor [ttk::style lookup . -focuscolor] \
+            selectBackground [ttk::style lookup . -selectbackground] \
+            selectForeground [ttk::style lookup . -selectforeground] \
+            activeBackground [ttk::style lookup . -selectbackground] \
+            activeForeground [ttk::style lookup . -selectforeground]
+        
+        ttk::style map . -foreground [list disabled $colors(-disabledfg)]
+
+        option add *font [ttk::style lookup . -font]
+        option add *Menu.selectcolor $colors(-fg)
+        option add *Menu.background #0e0e0f
+    
+	} 
+}
diff --git a/gui_data/sv_ttk/theme/dark.tcl b/gui_data/sv_ttk/theme/dark.tcl
new file mode 100644
index 0000000..3468846
--- /dev/null
+++ b/gui_data/sv_ttk/theme/dark.tcl
@@ -0,0 +1,540 @@
+# Copyright © 2021 rdbende <rdbende@gmail.com>
+
+# A stunning dark theme for ttk based on Microsoft's Sun Valley visual style 
+
+package require Tk 8.6
+
+namespace eval ttk::theme::sun-valley-dark {
+    variable version 1.0
+    package provide ttk::theme::sun-valley-dark $version
+
+    ttk::style theme create sun-valley-dark -parent clam -settings {
+        proc load_images {imgdir} {
+            variable images
+            foreach file [glob -directory $imgdir *.png] {
+                set images([file tail [file rootname $file]]) \
+                [image create photo -file $file -format png]
+            }
+        }
+
+        load_images [file join [file dirname [info script]] dark]
+
+        array set colors {
+            -fg             "#F6F6F7"
+            -bg             "#0e0e0f"
+            -disabledfg     "#F6F6F7"
+            -selectfg       "#ffffff"
+            -selectbg       "#2f60d8"
+        }
+
+        ttk::style layout TButton {
+            Button.button -children {
+                Button.padding -children {
+                    Button.label -side left -expand 1
+                } 
+            }
+        }
+
+        ttk::style layout Toolbutton {
+            Toolbutton.button -children {
+                Toolbutton.padding -children {
+                    Toolbutton.label -side left -expand 1
+                } 
+            }
+        }
+
+        ttk::style layout TMenubutton {
+            Menubutton.button -children {
+                Menubutton.padding -children {
+                    Menubutton.label -side left -expand 1
+                    Menubutton.indicator -side right -sticky nsew
+                }
+            }
+        }
+
+        ttk::style layout TOptionMenu {
+            OptionMenu.button -children {
+                OptionMenu.padding -children {
+                    OptionMenu.label -side left -expand 0
+                    OptionMenu.indicator -side right -sticky nsew
+                }
+            }
+        }
+
+        ttk::style layout Accent.TButton {
+            AccentButton.button -children {
+                AccentButton.padding -children {
+                    AccentButton.label -side left -expand 1
+                } 
+            }
+        }
+
+        ttk::style layout Titlebar.TButton {
+            TitlebarButton.button -children {
+                TitlebarButton.padding -children {
+                    TitlebarButton.label -side left -expand 1
+                } 
+            }
+        }
+
+        ttk::style layout Close.Titlebar.TButton {
+            CloseButton.button -children {
+                CloseButton.padding -children {
+                    CloseButton.label -side left -expand 1
+                } 
+            }
+        }
+
+        ttk::style layout TCheckbutton {
+            Checkbutton.button -children {
+                Checkbutton.padding -children {
+                    Checkbutton.indicator -side left
+                    Checkbutton.label -side right -expand 1
+                }
+            }
+        }
+
+        ttk::style layout Switch.TCheckbutton {
+            Switch.button -children {
+                Switch.padding -children {
+                    Switch.indicator -side left
+                    Switch.label -side right -expand 1
+                }
+            }
+        }
+
+        ttk::style layout Toggle.TButton {
+            ToggleButton.button -children {
+                ToggleButton.padding -children {
+                    ToggleButton.label -side left -expand 1
+                } 
+            }
+        }
+
+        ttk::style layout TRadiobutton {
+            Radiobutton.button -children {
+                Radiobutton.padding -children {
+                    Radiobutton.indicator -side left
+                    Radiobutton.label -side right -expand 1
+                }
+            }
+        }
+
+        ttk::style layout Vertical.TScrollbar {
+            Vertical.Scrollbar.trough -sticky ns -children {
+                Vertical.Scrollbar.uparrow -side top
+                Vertical.Scrollbar.downarrow -side bottom
+                Vertical.Scrollbar.thumb -expand 1
+            }
+        }
+
+        ttk::style layout Horizontal.TScrollbar {
+            Horizontal.Scrollbar.trough -sticky ew -children {
+                Horizontal.Scrollbar.leftarrow -side left
+                Horizontal.Scrollbar.rightarrow -side right
+                Horizontal.Scrollbar.thumb -expand 1
+            }
+        }
+
+        ttk::style layout TSeparator {
+            TSeparator.separator -sticky nsew
+        }
+
+        ttk::style layout TCombobox {
+            Combobox.field -sticky nsew -children {
+                Combobox.padding -expand 1 -sticky nsew -children {
+                    Combobox.textarea -sticky nsew
+                }
+            }
+            null -side right -sticky ns -children {
+                Combobox.arrow -sticky nsew
+            }
+        }
+        
+        ttk::style layout TSpinbox {
+            Spinbox.field -sticky nsew -children {
+                Spinbox.padding -expand 1 -sticky nsew -children {
+                    Spinbox.textarea -sticky nsew
+                }
+                
+            }
+            null -side right -sticky nsew -children {
+                Spinbox.uparrow -side left -sticky nsew
+                Spinbox.downarrow -side right -sticky nsew
+            }
+        }  
+        
+        ttk::style layout Card.TFrame {
+            Card.field {
+                Card.padding -expand 1 
+            }
+        }
+
+        ttk::style layout TLabelframe {
+            Labelframe.border {
+                Labelframe.padding -expand 1 -children {
+                    Labelframe.label -side left
+                }
+            }
+        }
+
+        ttk::style layout TNotebook {
+            Notebook.border -children {
+                TNotebook.Tab -expand 1
+                Notebook.client -sticky nsew
+            }
+        }
+
+        ttk::style layout Treeview.Item {
+            Treeitem.padding -sticky nsew -children {
+                Treeitem.image -side left -sticky {}
+                Treeitem.indicator -side left -sticky {}
+                Treeitem.text -side left -sticky {}
+            }
+        }
+
+        # Button
+        ttk::style configure TButton -padding {8 4} -anchor center -foreground $colors(-fg)
+
+        ttk::style map TButton -foreground \
+            [list disabled #7a7a7a \
+                pressed #d0d0d0]
+
+        ttk::style element create Button.button image \
+            [list $images(button-rest) \
+                {selected disabled} $images(button-disabled) \
+                disabled $images(button-disabled) \
+                selected $images(button-rest) \
+                pressed $images(button-pressed) \
+                active $images(button-hover) \
+            ] -border 4 -sticky nsew
+
+        # Toolbutton
+        ttk::style configure Toolbutton -padding {8 4} -anchor center
+
+        ttk::style element create Toolbutton.button image \
+            [list $images(empty) \
+                {selected disabled} $images(button-disabled) \
+                selected $images(button-rest) \
+                pressed $images(button-pressed) \
+                active $images(button-hover) \
+            ] -border 4 -sticky nsew
+
+        # Menubutton
+        ttk::style configure TMenubutton -padding {8 4 0 4}
+
+        ttk::style element create Menubutton.button \
+            image [list $images(button-rest) \
+                disabled $images(button-disabled) \
+                pressed $images(button-pressed) \
+                active $images(button-hover) \
+            ] -border 4 -sticky nsew 
+
+        ttk::style element create Menubutton.indicator image $images(arrow-down) -width 28 -sticky {}
+
+        # OptionMenu
+        ttk::style configure TOptionMenu -padding {8 4 0 4}
+        ttk::style configure OptionMenudropdown -borderwidth 0 -relief ridge
+
+        ttk::style element create OptionMenu.button \
+            image [list $images(button-rest) \
+                disabled $images(button-disabled) \
+                pressed $images(button-pressed) \
+                active $images(button-hover) \
+            ] -border 0 -sticky nsew 
+
+        ttk::style element create OptionMenu.indicator image $images(arrow-down) -width 28 -sticky {}
+
+        # Accent.TButton
+        ttk::style configure Accent.TButton -padding {8 4} -anchor center -foreground #ffffff
+
+        ttk::style map Accent.TButton -foreground \
+            [list pressed #25536a \
+                disabled #a5a5a5]
+
+        ttk::style element create AccentButton.button image \
+            [list $images(button-accent-rest) \
+                {selected disabled} $images(button-accent-disabled) \
+                disabled $images(button-accent-disabled) \
+                selected $images(button-accent-rest) \
+                pressed $images(button-accent-pressed) \
+                active $images(button-accent-hover) \
+            ] -border 4 -sticky nsew
+
+        # Titlebar.TButton
+        ttk::style configure Titlebar.TButton -padding {8 4} -anchor center -foreground #ffffff
+
+        ttk::style map Titlebar.TButton -foreground \
+            [list disabled #6f6f6f \
+                pressed #d1d1d1 \
+                active #ffffff]
+
+        ttk::style element create TitlebarButton.button image \
+            [list $images(empty) \
+                disabled $images(empty) \
+                pressed $images(button-titlebar-pressed) \
+                active $images(button-titlebar-hover) \
+            ] -border 4 -sticky nsew
+
+        # Close.Titlebar.TButton
+        ttk::style configure Close.Titlebar.TButton -padding {8 4} -anchor center -foreground #ffffff
+
+        ttk::style map Close.Titlebar.TButton -foreground \
+            [list disabled #6f6f6f \
+                pressed #e8bfbb \
+                active #ffffff]
+
+        ttk::style element create CloseButton.button image \
+            [list $images(empty) \
+                disabled $images(empty) \
+                pressed $images(button-close-pressed) \
+                active $images(button-close-hover) \
+            ] -border 4 -sticky nsew
+
+        # Checkbutton
+        ttk::style configure TCheckbutton -padding 2
+
+        ttk::style element create Checkbutton.indicator image \
+            [list $images(check-unsel-rest) \
+                {alternate disabled} $images(check-tri-disabled) \
+                {selected disabled} $images(check-disabled) \
+                disabled $images(check-unsel-disabled) \
+                {pressed alternate} $images(check-tri-hover) \
+                {active alternate} $images(check-tri-hover) \
+                alternate $images(check-tri-rest) \
+                {pressed selected} $images(check-hover) \
+                {active selected} $images(check-hover) \
+                selected $images(check-rest) \
+                {pressed !selected} $images(check-unsel-pressed) \
+                active $images(check-unsel-hover) \
+            ] -width 26 -sticky w
+
+        # Switch.TCheckbutton
+        ttk::style element create Switch.indicator image \
+            [list $images(switch-off-rest) \
+                {selected disabled} $images(switch-on-disabled) \
+                disabled $images(switch-off-disabled) \
+                {pressed selected} $images(switch-on-pressed) \
+                {active selected} $images(switch-on-hover) \
+                selected $images(switch-on-rest) \
+                {pressed !selected} $images(switch-off-pressed) \
+                active $images(switch-off-hover) \
+            ] -width 46 -sticky w
+
+        # Toggle.TButton
+        ttk::style configure Toggle.TButton -padding {8 4 8 4} -anchor center -foreground $colors(-fg)
+
+        ttk::style map Toggle.TButton -foreground \
+            [list {selected disabled} #a5a5a5 \
+                {selected pressed} #d0d0d0 \
+                selected #ffffff \
+                pressed #25536a \
+                disabled #7a7a7a
+            ]
+
+
+        ttk::style element create ToggleButton.button image \
+            [list $images(button-rest) \
+                {selected disabled} $images(button-accent-disabled) \
+                disabled $images(button-disabled) \
+                {pressed selected} $images(button-rest) \
+                {active selected} $images(button-accent-hover) \
+                selected $images(button-accent-rest) \
+                {pressed !selected} $images(button-accent-rest) \
+                active $images(button-hover) \
+            ] -border 4 -sticky nsew
+
+        # Radiobutton
+        ttk::style configure TRadiobutton -padding 0
+
+        ttk::style element create Radiobutton.indicator image \
+            [list $images(radio-unsel-rest) \
+                {selected disabled} $images(radio-disabled) \
+                disabled $images(radio-unsel-disabled) \
+                {pressed selected} $images(radio-pressed) \
+                {active selected} $images(radio-hover) \
+                selected $images(radio-rest) \
+                {pressed !selected} $images(radio-unsel-pressed) \
+                active $images(radio-unsel-hover) \
+            ] -width 20 -sticky w
+
+        ttk::style configure Menu.TRadiobutton -padding 0
+
+        ttk::style element create Menu.Radiobutton.indicator image \
+            [list $images(radio-unsel-rest) \
+                {selected disabled} $images(radio-disabled) \
+                disabled $images(radio-unsel-disabled) \
+                {pressed selected} $images(radio-pressed) \
+                {active selected} $images(radio-hover) \
+                selected $images(radio-rest) \
+                {pressed !selected} $images(radio-unsel-pressed) \
+                active $images(radio-unsel-hover) \
+            ] -width 20 -sticky w
+
+        # Scrollbar
+
+        #ttk::style layout Vertical.TScrollbar
+
+        ttk::style element create Horizontal.Scrollbar.trough image $images(scroll-hor-trough) -sticky ew -border 0
+        ttk::style element create Horizontal.Scrollbar.thumb image $images(scroll-hor-thumb) -sticky ew -border 3
+
+        ttk::style element create Horizontal.Scrollbar.rightarrow image $images(scroll-right) -sticky {} -width 13
+        ttk::style element create Horizontal.Scrollbar.leftarrow image $images(scroll-left) -sticky {} -width 13
+
+        ttk::style element create Vertical.Scrollbar.trough image $images(scroll-vert-trough) -sticky ns -border 0
+        ttk::style element create Vertical.Scrollbar.thumb image $images(scroll-vert-thumb) -sticky ns -border 3
+
+        ttk::style element create Vertical.Scrollbar.uparrow image $images(scroll-up) -sticky {} -height 13
+        ttk::style element create Vertical.Scrollbar.downarrow image $images(scroll-down) -sticky {} -height 13
+
+        # Scale
+        ttk::style element create Horizontal.Scale.trough image $images(scale-trough-hor) \
+            -border 5 -padding 0
+
+        ttk::style element create Vertical.Scale.trough image $images(scale-trough-vert) \
+            -border 5 -padding 0
+
+        ttk::style element create Scale.slider \
+            image [list $images(scale-thumb-rest) \
+                disabled $images(scale-thumb-disabled) \
+                pressed $images(scale-thumb-pressed) \
+                active $images(scale-thumb-hover) \
+            ] -sticky {}
+
+        # Progressbar
+        ttk::style element create Horizontal.Progressbar.trough image $images(progress-trough-hor) \
+            -border 1 -sticky ew
+
+        ttk::style element create Horizontal.Progressbar.pbar image $images(progress-pbar-hor) \
+            -border 2 -sticky ew
+
+        ttk::style element create Vertical.Progressbar.trough image $images(progress-trough-vert) \
+            -border 1 -sticky ns
+
+        ttk::style element create Vertical.Progressbar.pbar image $images(progress-pbar-vert) \
+            -border 2 -sticky ns
+
+        # Entry
+        ttk::style configure TEntry -foreground $colors(-fg)
+
+        ttk::style map TEntry -foreground \
+            [list disabled #757575 \
+                pressed #cfcfcf
+            ]
+
+        ttk::style element create Entry.field \
+            image [list $images(entry-rest) \
+                {focus hover !invalid} $images(entry-focus) \
+                invalid $images(entry-invalid) \
+                disabled $images(entry-disabled) \
+                {focus !invalid} $images(entry-focus) \
+                hover $images(entry-hover) \
+            ] -border 5 -padding 8 -sticky nsew
+
+        # Combobox
+        ttk::style configure TCombobox -foreground $colors(-fg)
+
+        ttk::style map TCombobox -foreground \
+            [list disabled #757575 \
+                pressed #cfcfcf
+            ]
+
+        ttk::style configure TCombobox -foreground $colors(-fg)
+        ttk::style configure ComboboxPopdownFrame -borderwidth 3 -relief solid
+
+        ttk::style map TCombobox -selectbackground [list \
+            {readonly hover} $colors(-selectbg) \
+            {readonly focus} $colors(-selectbg) \
+        ] -selectforeground [list \
+            {readonly hover} $colors(-selectfg) \
+            {readonly focus} $colors(-selectfg) \
+        ]
+
+        ttk::style element create Combobox.field \
+            image [list $images(button-rest) \
+                {readonly disabled} $images(button-disabled) \
+                {readonly pressed} $images(button-pressed) \
+                {readonly hover} $images(button-hover) \
+                readonly $images(button-rest) \
+                invalid $images(entry-invalid) \
+                disabled $images(entry-disabled) \
+                focus $images(entry-focus) \
+                hover $images(button-hover) \
+            ] -border 5 -padding 8 -sticky nsew
+            
+        ttk::style element create Combobox.arrow image $images(arrow-down) -width 35 -sticky {}
+
+        # Spinbox
+        ttk::style configure TSpinbox -foreground $colors(-fg)
+
+        ttk::style map TSpinbox -foreground \
+            [list disabled #757575 \
+                pressed #cfcfcf
+            ]
+
+        ttk::style element create Spinbox.field \
+            image [list $images(entry-rest) \
+                invalid $images(entry-invalid) \
+                disabled $images(entry-disabled) \
+                focus $images(entry-focus) \
+                hover $images(entry-hover) \
+            ] -border 5 -padding {8 8 54 8} -sticky nsew
+
+        ttk::style element create Spinbox.uparrow image $images(arrow-up) -width 35 -sticky {}
+        ttk::style element create Spinbox.downarrow image $images(arrow-down) -width 35 -sticky {}
+
+        # Sizegrip
+        ttk::style element create Sizegrip.sizegrip image $images(sizegrip) \
+            -sticky nsew
+
+        # Separator
+        ttk::style element create TSeparator.separator image $images(separator)
+
+        # Card
+        ttk::style element create Card.field image $images(card) \
+            -border 10 -padding 4 -sticky nsew
+
+        # Labelframe
+        ttk::style element create Labelframe.border image $images(card) \
+            -border 5 -padding 4 -sticky nsew
+        
+        # Notebook
+        ttk::style configure TNotebook -padding 1
+
+        ttk::style element create Notebook.border \
+            image $images(notebook-border) -border 5 -padding 5
+
+        ttk::style element create Notebook.client image $images(notebook)
+
+        ttk::style element create Notebook.tab \
+            image [list $images(tab-rest) \
+                selected $images(tab-selected) \
+                active $images(tab-hover) \
+            ] -border 13 -padding {16 14 16 6} -height 32
+
+        # Treeview
+        ttk::style element create Treeview.field image $images(card) \
+            -border 5
+
+        ttk::style element create Treeheading.cell \
+            image [list $images(treeheading-rest) \
+                pressed $images(treeheading-pressed) \
+                active $images(treeheading-hover)
+            ] -border 5 -padding 15 -sticky nsew
+        
+        ttk::style element create Treeitem.indicator \
+            image [list $images(arrow-right) \
+                user2 $images(empty) \
+                user1 $images(arrow-down) \
+            ] -width 26 -sticky {}
+
+        ttk::style configure Treeview -background $colors(-bg) -rowheight [expr {[font metrics font -linespace] + 2}]
+        ttk::style map Treeview \
+            -background [list selected #292929] \
+            -foreground [list selected $colors(-selectfg)]
+
+        # Panedwindow
+        # Insane hack to remove clam's ugly sash
+        ttk::style configure Sash -gripcount 0
+    }
+}
\ No newline at end of file
diff --git a/gui_data/sv_ttk/theme/dark/arrow-down.png b/gui_data/sv_ttk/theme/dark/arrow-down.png
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