Ticket #30488: 30488.1.diff

src/wp-admin/includes/ajax-actions.php

@@ -2600 +2600 @@
                 wp_send_json_error();
         }
 
+        $previous_color_scheme = get_user_meta( get_current_user_id(), 'admin_color', true );
         update_user_meta( get_current_user_id(), 'admin_color', $color_scheme );
-        wp_send_json_success();
+        wp_send_json_success( array(
+                'remove' => 'admin-color-' . $previous_color_scheme,
+                'add' => 'admin-color-' . $color_scheme
+        ) );
 }
 
 /**

src/wp-admin/js/user-profile.js

@@ -119 +119 @@
                                         action:       'save-user-color-scheme',
                                         color_scheme: $this.children( 'input[name="admin_color"]' ).val(),
                                         nonce:        $('#color-nonce').val()
+                                }).done( function( response ) {
+                                        if ( response.success && response.data.remove && response.data.add ) {
+                                                $( 'body' ).removeClass( response.data.remove ).addClass( response.data.add );
+                                        }
                                 });
                         }
                 });