fix color when flat and no stroke

![progress](https://cloud.githubusercontent.com/assets/5574368/3279922/e25c92d8-f42b-11e3-99a3-c46a7698de17.jpg)

I appreciate you adding a comment here, but since this is a pretty clear `if`statement, I think it would be best to remove it in this instance. After this, I'll merge the pull-request. Thanks so much for the fix along with the clear explanation of the issue!