highlighting actual output instead of expected output

A stuff was complaining that highlighting output on the left side (expected result) is mis-leading.  So I did some change.
Before:
![screen shot 2014-11-18 at 10 13 16 pm](https://cloud.githubusercontent.com/assets/4983239/5088624/45f61ea8-6f70-11e4-91e8-af8fa6df887f.png)

Now:
![screen shot 2014-11-18 at 10 14 01 pm](https://cloud.githubusercontent.com/assets/4983239/5088627/4bd54c86-6f70-11e4-934f-589c1152ce13.png)