Make appropriate color changes from PR comments

See for details: https://github.com/adobe/brackets/pull/6315/files#r8624968

Author: stowball

src/styles/brackets_patterns_override.less

@@ -1074,15 +1074,16 @@ input[type="color"],
     // Update Button Type
     &.update {
         background-color: #91cc41;
-        border-color: #658e2d;
-        box-shadow: inset 0 1px 0 #d9edbd;
+        border-color: #65a015;
+        box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.27);
         color: #fff;
-        text-shadow: 0 1px 0 #333;
+		font-weight: @font-weight-semibold;
+        text-shadow: 0 -1px 0 rgba(0, 0, 0, 0.24) ;
 
         &:active {
             background-color: #82b839;
             border-color: #5b8028;
-            box-shadow: inset 0 1px 0 #d3e6ba;
+            box-shadow: inset 0 1px 0 rgba(0, 0, 0, 0.06);
             color: #fff;
         }
     }