Fixed an issue where the correct global colors to the icon weren't being applied in split variant. (#409)

* Fix global icon coloring

* Fix themes

* Update custom modules to use global colors if enabled

* Fix icons

* Fix custom module icon color

themes/everforest_split.json

@@ -3,7 +3,7 @@
   "theme.bar.background": "#2b3339",
   "theme.bar.buttons.media.icon": "#323d43",
   "theme.bar.buttons.media.text": "#a7c080",
-  "theme.bar.buttons.icon": "#a7c080",
+  "theme.bar.buttons.icon": "#242438",
   "theme.bar.buttons.text": "#a7c080",
   "theme.bar.buttons.hover": "#445055",
   "theme.bar.buttons.background": "#323d43",
@@ -251,7 +251,7 @@
   "theme.bar.menus.check_radio_button.background": "#000000",
   "theme.bar.menus.check_radio_button.active": "#ffffff",
   "theme.bar.buttons.style": "split",
-  "theme.bar.buttons.icon_background": "#242438",
+  "theme.bar.buttons.icon_background": "#a7c080",
   "theme.bar.buttons.volume.icon_background": "#dbbc7f",
   "theme.bar.buttons.network.icon_background": "#e69875",
   "theme.bar.buttons.bluetooth.icon_background": "#a7c080",