update test and css and submodules

Author: chippison

plugins/Morpheus/stylesheets/simple_structure.css

@@ -13,7 +13,7 @@ body#simple {
   color: #888;
   text-align: center;
   font-size: 6px;
-  background-color: #3450a3 !important;
+  background-color: var(--theme-color-header-background, #fff) !important;
   padding: 15px 0;
 }
 

tests/UI/specs/Menus_spec.js

@@ -131,7 +131,7 @@ describe("Menus", function () {
         });
         await page.waitForTimeout(250);
 
-        expect(await page.screenshotSelector('#mobile-top-menu')).to.matchImage('mobile_top');
+        expect(await page.screenshotSelector('#mobile-top-menu', false)).to.matchImage('mobile_top');
     });
 
     it('should load the left reporting menu correctly on mobile', async function() {