[Frontend] IN-PROGRESS Theme changes continuing

open #95
Refactored btnSubtle and containerSubtle mixins
to simplify;

platform/commonUI/general/res/sass/controls/_controls.scss

@@ -263,7 +263,7 @@ label.checkbox.custom {
 	.title-label {
 		//@include test(green, 0.9);
 		@include ellipsize();
-		color: lighten($colorBodyFg, 40%);
+		//color: pushBack($colorBodyFg, 40%);
 		@include webkitProp(flex, '0 1 auto');
 		padding-right: 0.35em; // For context arrow. Done with em's so pad is relative to the scale of the text.
 		//position: relative;