Darkens global blacks

src/themes/packages/default/globals/site.variables

@@ -30,7 +30,7 @@
 @teal             : #39CCCC;
 @yellow           : #FFCB08;
 
-@black            : #333333;
+@black            : #191919;
 @grey             : #CCCCCC;
 @white            : #FFFFFF;
 
@@ -277,16 +277,19 @@
       Borders
 --------------------*/
 
-@circularRadius           : 500rem;
+@circularRadius                : 500rem;
 
-@borderColor              : rgba(0, 0, 0, 0.1);
-@selectedBorderColor      : rgba(0, 0, 0, 0.2);
+@borderColor                   : rgba(0, 0, 0, 0.1);
+@selectedBorderColor           : rgba(0, 0, 0, 0.2);
 
-@solidBorderColor         : #DDDDDD;
-@solidSelectedBorderColor : #B0B0B0;
+@solidBorderColor              : #DDDDDD;
+@solidSelectedBorderColor      : #B0B0B0;
 
-@whiteBorderColor         : rgba(255, 255, 255, 0.2);
-@selectedWhiteBorderColor : rgba(255, 255, 255, 0.8);
+@whiteBorderColor              : rgba(255, 255, 255, 0.2);
+@selectedWhiteBorderColor      : rgba(255, 255, 255, 0.8);
+
+@solidWhiteBorderColor         : #555555;
+@selectedSolidWhiteBorderColor : #999999;
 
 /*-------------------
         Sizes

src/themes/packages/github/collections/menu.variables

@@ -58,7 +58,7 @@
 @verticalBackground: #FFFFFF;
 @verticalItemBackground: linear-gradient(rgba(0, 0, 0, 0), rgba(0, 0, 0, 0.02));
 
-@invertedBackground: #333333 linear-gradient(rgba(255, 255, 255, 0.15), rgba(0, 0, 0, 0.15));
+@invertedBackground: @black linear-gradient(rgba(255, 255, 255, 0.15), rgba(0, 0, 0, 0.15));
 @invertedBoxShadow             :
   0px 1px 2px 0px rgba(0, 0, 0, 0.15),
   0px 0px 0px 1px rgba(255, 255, 255, 0.15)