diff --git a/app/assets/stylesheets/scm.css.sass b/app/assets/stylesheets/scm.css.sass
index dd3000ee39..67da4c70d5 100644
--- a/app/assets/stylesheets/scm.css.sass
+++ b/app/assets/stylesheets/scm.css.sass
@@ -112,6 +112,16 @@ table.filecontent
     white-space: -moz-pre-wrap
     white-space: -o-pre-wrap
 
+  td.diff_in pre
+    background: #DDFFDD
+    span
+      background: #AAFFAA
+
+  td.diff_out pre
+    background: #FFDDDD
+    span
+      background: #FFAAAA
+
 // 12 different colors for the annonate view
 table.annotate
   tr