Theme system (#2164)

* Themes instead of Styles
* Colors changed to theme colors
* Reworked style management
* Theme settings app
* warn, menu dual set
* Added Aqua style

firmware/application/ui/ui_btngrid.hpp

@@ -98,8 +98,8 @@ class BtnGridView : public View {
     Image arrow_more{
         {228, 320 - 8, 8, 8},
         &bitmap_more,
-        Color::white(),
-        Color::black()};
+        Theme::getInstance()->bg_darkest->foreground,
+        Theme::getInstance()->bg_darkest->background};
 
     int button_w = 240 / rows_;
     static constexpr int button_h = 48;