studio - revises edX base color

cms/static/sass/_variables.scss

@@ -48,7 +48,7 @@ $gray-d3: shade($gray,60%);
 $gray-d4: shade($gray,80%);
 
 // $blue: rgb(85, 151, 221);
-$blue: rgb(0, 143, 213);
+$blue: rgb(0, 159, 230);
 $blue-l1: tint($blue,20%);
 $blue-l2: tint($blue,40%);
 $blue-l3: tint($blue,60%);