Disable color sliders when theme is enabled

src/FileHelper.cake

@@ -1168,8 +1168,12 @@
         (imgui-call Text "Separate file extensions with a single space")
         (imgui-call EndTooltip)))
 
+    (when g-treemap-use-theme-for-colorization
+      (imgui-call BeginDisabled))
     (when (imgui-call ColorEdit3 "Color" (path colorizer > color))
       (set colorizers-changed true))
+    (when g-treemap-use-theme-for-colorization
+      (imgui-call EndDisabled))
 
     (unless is-default-entry
       (when (imgui-call Button "X Delete")