fix: added background color for sub-operation (#1095)

Co-authored-by: Cody's Dad <[email protected]>

Author: Aryan4884

library/src/containers/Sidebar/Sidebar.tsx

@@ -348,7 +348,13 @@ const OperationItem: React.FunctionComponent<OperationItemProps> = ({
       config,
       isAsyncAPIv2,
     });
-  const bgColors = ['bg-red-600', 'bg-orange-600', 'bg-green-600'];
+  const bgColors = [
+    'bg-red-600',
+    'bg-orange-600',
+    'bg-green-600',
+    'bg-blue-600',
+  ];
+
   return (
     <li key={`menu-operation-list-${operationHrefId}`}>
       <a