minor formatting
diff --git a/doc/html/comparison.html b/doc/html/comparison.html
index 82aca33..cf8930e 100644
--- a/doc/html/comparison.html
+++ b/doc/html/comparison.html
@@ -191,7 +191,7 @@
 				<td align="right" bgcolor="#F4F4CC">
 					Shorten v3.2
 				</td>
-				<td>
+				<td bgcolor="#D4D4C0">
 					YES (non-<a href="http://www.opensource.org/licenses/index.html">OSI</a> license)
 				</td>
 				<td bgcolor="#D4D4C0">