diff --git a/gui_data/sv_ttk/__init__.py b/gui_data/sv_ttk/__init__.py
index b265472..978626b 100644
--- a/gui_data/sv_ttk/__init__.py
+++ b/gui_data/sv_ttk/__init__.py
@@ -1,4 +1,10 @@
 from pathlib import Path
+import platform
+
+if platform.system() == "Darwin":
+    sun_valley_tcl = "sun-valley_darwin.tcl"
+else:
+    sun_valley_tcl = "sun-valley.tcl"
 
 inited = False
 root = None
@@ -12,7 +18,7 @@ def init(func):
         if not inited:
             from tkinter import _default_root
 
-            path = (Path(__file__).parent / "sun-valley.tcl").resolve()
+            path = (Path(__file__).parent / sun_valley_tcl).resolve()
 
             try:
                 _default_root.tk.call("source", str(path))
diff --git a/gui_data/sv_ttk/sun-valley_darwin.tcl b/gui_data/sv_ttk/sun-valley_darwin.tcl
new file mode 100644
index 0000000..f76c535
--- /dev/null
+++ b/gui_data/sv_ttk/sun-valley_darwin.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" 13} \
+            -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
+    
+	} 
+}