Accessibility: Administration: Update various background colors for increased contrast.

This ensures that contrast between text color and background meets the WCAG 2.0 AA recommended value. The following locations were changed:

- Network List Tables: Use lighter background colors for site status indicator.
- Nav Menus: Use a lighter background color for invalid menu items.
- Pointers: Use a darker background for pointer header.
- Themes: Use darker background on filter button hover.
- Customizer: Use darker background for selected widget.

Follow-up to [50025], [50571].
Props kebbet, melchoyce, peterwilsoncc.
Fixes #52760.



git-svn-id: https://develop.svn.wordpress.org/trunk@50687 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-admin/css/common.css

@@ -1179,7 +1179,7 @@ th.action-links {
 
 .show-filters .wp-filter .drawer-toggle:hover,
 .show-filters .wp-filter .drawer-toggle:focus {
-	background: #72aee6;
+	background: #2271b1;
 }
 
 .show-filters .wp-filter .drawer-toggle:before {

src/wp-admin/css/customize-widgets.css

@@ -137,7 +137,7 @@
 #customize-theme-controls .move-widget-area {
 	display: none;
 	background: #fff;
-	border: 1px solid #dcdcde;
+	border: 1px solid #c3c4c7;
 	border-top: none;
 	cursor: auto;
 }
@@ -163,7 +163,7 @@
 	margin: 0;
 	padding: 13px 15px 15px 42px;
 	color: #50575e;
-	border-top: 1px solid #f0f0f1;
+	border-top: 1px solid #c3c4c7;
 	cursor: pointer;
 	-webkit-user-select: none;
 	-ms-user-select: none;
@@ -182,13 +182,12 @@
 }
 
 #customize-theme-controls .widget-area-select li:last-child {
-	border-bottom: 1px solid #f0f0f1;
+	border-bottom: 1px solid #c3c4c7;
 }
 
 #customize-theme-controls .widget-area-select .selected {
 	color: #fff;
-	text-shadow: 0 -1px 0 rgba(0, 0, 0, 0.4);
-	background: #72aee6;
+	background: #2271b1;
 }
 
 #customize-theme-controls .widget-area-select .selected:before {

src/wp-admin/css/list-tables.css

@@ -1577,20 +1577,16 @@ div.action-links,
 /* ms */
 /* Background Color for Site Status */
 .wp-list-table .site-deleted,
-.wp-list-table tr.site-deleted {
-	background: #ff8085;
-}
-.wp-list-table .site-spammed,
-.wp-list-table tr.site-spammed {
-	background: #ffabaf;
-}
+.wp-list-table tr.site-deleted,
 .wp-list-table .site-archived,
 .wp-list-table tr.site-archived {
 	background: #fcf0f1;
 }
+.wp-list-table .site-spammed,
+.wp-list-table tr.site-spammed,
 .wp-list-table .site-mature,
 .wp-list-table tr.site-mature {
-	background: #facfd2;
+	background: #fcf9e8;
 }
 
 .sites.fixed .column-lastupdated,

src/wp-admin/css/nav-menus.css

@@ -455,8 +455,8 @@ ul.add-menu-item-tabs li {
 }
 
 #menu-to-edit .menu-item-invalid .menu-item-handle {
-	background: #facfd2;
-	border-color: #ffabaf;
+	background: #fcf0f1;
+	border-color: #d63638;
 }
 
 .no-js .menu-item-edit-active .item-edit {