change code block to blue

Author: Shriram Rajagopalan

_sass/base/_colors.scss

@@ -22,7 +22,8 @@ $linkHoverColor: darken($linkColor, 10%);
 $linkColorSecondary: $white;
 $linkColorTertiary: $gray;
 $codeColor: darken($linkColor, 20%);
-$codeBkColor: #ebfaf8;
+//$codeBkColor: #ebfaf8;
+$codeBkColor: $thirdBrandColor;
 $wellColor: #F9F9F9;
 $textColor: #535f61;
 $titleColor: #555555;