Issue #2894427 by yoroy, tedbow, Wim Leers: White toolbar background when in...

Issue #2894427 by yoroy, tedbow, Wim Leers: White toolbar background when in edit mode is distracting and not pretty

(cherry picked from commit 16377311)

core/modules/outside_in/css/outside_in.theme.css

@@ -9,7 +9,7 @@
 
 /* Style the edit mode toolbar and tabs. */
 #toolbar-bar.js-outside-in-edit-mode {
-  background-color: #fff;
+  background-image: linear-gradient(to bottom,#0c97ed,#1f86c7);
 }
 .js-outside-in-edit-mode .toolbar-item:not(.toolbar-icon-edit) {
   color: #999;