Refactor color usage for full theming support from one source of truth (#1)

* Refactor color usage for full theming support from one source of truth

* remove unused components

* remove old commented out font families

* override custom theme in main.cpp

src/main/main.cpp

@@ -29,6 +29,7 @@
 #include "banjo_game.h"
 #include "recomp_data.h"
 #include "ovl_patches.hpp"
+#include "theme.h"
 #include "librecomp/game.hpp"
 #include "librecomp/mods.hpp"
 #include "librecomp/helpers.hpp"
@@ -602,6 +603,7 @@ int main(int argc, char** argv) {
     REGISTER_FUNC(recomp_get_analog_inverted_axes);
     recompui::register_ui_exports();
     recomputil::register_data_api_exports();
+    recomptheme::set_custom_theme();
 
     banjo::register_bk_overlays();
     banjo::register_bk_patches();