Admin: A11y: Update separator colors.

Update the base color for text in row actions, dashboard widget footers, and similar contexts to meet WCAG color standards.

Props bobbingwide, joedolson.
Fixes #64313.

git-svn-id: https://develop.svn.wordpress.org/trunk@61763 602fd350-edb4-49c9-b593-d223f7449a82

Author: joedolson

src/wp-admin/css/common.css

@@ -2245,7 +2245,7 @@ html.wp-toolbar {
 
 .postbox .handle-order-higher,
 .postbox .handle-order-lower {
-	color: #787c82;
+	color: #646970;
 	width: 1.62rem;
 }
 
@@ -3659,7 +3659,7 @@ img {
 .postbox .handlediv.button-link,
 .item-edit,
 .toggle-indicator {
-	color: #787c82;
+	color: #646970;
 }
 
 .widget-action {

src/wp-admin/css/dashboard.css

@@ -625,7 +625,7 @@
 	margin-bottom: 0;
 	padding: 12px;
 	border-top: 1px solid #f0f0f1;
-	color: #dcdcde;
+	color: #646970;
 }
 
 /* Safari 10 + VoiceOver specific: without this, the hidden text gets read out before the link. */
@@ -950,7 +950,7 @@ body #dashboard-widgets .postbox form .submit {
 }
 
 .activity-block .subsubsub li {
-	color: #dcdcde;
+	color: #646970;
 }
 
 /* Dashboard activity widget - Comments */

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

@@ -853,7 +853,7 @@ p.pagenav {
 }
 
 .row-actions {
-	color: #a7aaad;
+	color: #646970;
 	font-size: 13px;
 	padding: 2px 0 0;
 	position: relative;