Color + and - signs in diffs to increase code legibility

app/assets/stylesheets/pages/diff.scss

@@ -154,6 +154,7 @@
           content: '-';
           position: absolute;
           left: 0.5em;
+          color: #af979a;
         }
       }
 
@@ -162,6 +163,7 @@
           content: '+';
           position: absolute;
           left: 0.5em;
+          color: #9bb0a1;
         }
       }
     }

changelogs/unreleased/26186-diff-view-plus-and-minus-signs-as-part-of-line-number.yml

+---
+title: Color + and - signs in diffs to increase code legibility
+merge_request:
+author: