Merge colors.css into wp-admin.css. Non-default color schemes became overloads rather than swaps in the 3.8 redesign. Benefits include:

* No more border-width, border-style, border-color insanity.
* Point releases are much less likely to require extra finagling to avoid rebuilding the color schemes.
* Yours truly has a better overall vision of ~14,000 lines of admin CSS and where we go from here.

1,065 net lines of red, y'all.
props helen, jorbin. fixes #18380.


git-svn-id: https://develop.svn.wordpress.org/trunk@27106 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-includes/css/wp-pointer.css

@@ -59,6 +59,8 @@
 }
 
 .wp-pointer-buttons a.close:before {
+	background: none;
+	color: #bbb;
 	content: '\f153';
 	display: block !important;
 	font: normal 13px/1 'dashicons';
@@ -73,6 +75,10 @@
 	top: 1px;
 }
 
+.wp-pointer-buttons a.close:hover:before {
+	color: #c00;
+}
+
 /* The arrow base class must take up no space, even with transparent borders. */
 .wp-pointer-arrow,
 .wp-pointer-arrow-inner {