added new style for tabs that borrows from scope styles. Closed issue #3576

New style as discussed in the issue that borrows for them scope. This is what it looks like:

![screen shot 2014-11-07 at 11 13 20 am](https://cloud.githubusercontent.com/assets/1386966/4959172/dd129302-66b5-11e4-9c19-47134eb39882.png)