Change groupHeader color to #EAEAEA

Bug: Issue 8321
Change-Id: I8b64ed20b2f8d9c85785f93ebb48990dc8d5fba3
diff --git a/polygerrit-ui/app/styles/gr-change-list-styles.html b/polygerrit-ui/app/styles/gr-change-list-styles.html
index 200b50e..c109381 100644
--- a/polygerrit-ui/app/styles/gr-change-list-styles.html
+++ b/polygerrit-ui/app/styles/gr-change-list-styles.html
@@ -68,7 +68,7 @@
         top: 0;
       }
       .groupHeader {
-        background-color: #f4f4f4;
+        background-color: #eaeaea;
       }
       .groupHeader a {
         color: #000;