Update sidebar

Change-Id: I93226803fff4989b5383b013fcb1a9e03ff5aac4
diff --git a/sidebars/root.php b/sidebars/root.php
index cf21e1e..b8834ce 100644
--- a/sidebars/root.php
+++ b/sidebars/root.php
@@ -1,5 +1,5 @@
-<div class="sideitem">
-    <h6>We Are Looking for a Sponsor</h6>
+<div class="sideitem" style="background-color: #DCCFAF;">
+    <h6 style="background-color: #646F8F;">We Are Looking for a Sponsor</h6>
     <p>
     	<b>Become a Sponsor for the most popular project in the Eclipse ecosystem.</b>
     </p>