Index: wp-admin/css/colors-fresh.css
===================================================================
--- wp-admin/css/colors-fresh.css	(revision 23983)
+++ wp-admin/css/colors-fresh.css	(working copy)
@@ -1353,30 +1353,20 @@
 
 /* Diff */
 table.diff .diff-deletedline {
-	background-color: #ffe5e6;
-	color: #8b0012;
+	background-color: #fdd;
 	text-decoration: line-through;
 }
 
 table.diff .diff-deletedline del {
-	background-color: #ffe5e6;
+	background-color: #ffaaaa;
 }
 
-table.diff .diff-deletedline-symbol {
-	color: #8b0012;
-}
-
 table.diff .diff-addedline {
-	background-color: #e9f6ea;
-	color: #035a03;
+	background-color: #dfd;
 }
 
-table.diff .diff-addedline-symbol {
-	color: #035a03;
-}
-
 table.diff .diff-addedline ins {
-	background-color: #e9f6ea;
+	background-color: #aaffaa;
 }
 
 #diff-title-to strong {
Index: wp-admin/css/colors-classic.css
===================================================================
--- wp-admin/css/colors-classic.css	(revision 23983)
+++ wp-admin/css/colors-classic.css	(working copy)
@@ -1459,21 +1459,20 @@
 
 /* Diff */
 table.diff .diff-deletedline {
-	background-color: #ffe5e6;
-	color: #8b0012;
+	background-color: #fdd;
 	text-decoration: line-through;
 }
 
 table.diff .diff-deletedline del {
-	background-color: #ffe5e6;
+	background-color: #ffaaaa;
 }
 
 table.diff .diff-addedline {
-	background-color: #e9f6ea;
+	background-color: #dfd;
 }
 
 table.diff .diff-addedline ins {
-	background-color: #e9f6ea;
+	background-color: #aaffaa;
 }
 
 .diff-header {