Lighten header nav badge colors

app/assets/stylesheets/framework/header.scss

@@ -458,15 +458,15 @@
     box-shadow: 0 1px 0 rgba($gl-header-color, 0.2);
 
     &.green-badge {
-      background-color: $green-500;
+      background-color: $green-400;
     }
 
     &.merge-requests-count {
-      background-color: $orange-500;
+      background-color: $orange-400;
     }
 
     &.todos-count {
-      background-color: $blue-500;
+      background-color: $blue-400;
     }
   }
 

changelogs/unreleased/update-mr-badge-count-color.yml

+---
+title: Lighten header counter badge colors to be more vibrant
+merge_request: 42002
+author:
+type: other