Inline Editor background color tweak.

Tagging @njx.

![screen shot 2013-10-10 at 2 29 03 pm](https://f.cloud.github.com/assets/1495261/1310587/bf1d64dc-31f3-11e3-9edf-6a2a38ebd048.png)

![screen shot 2013-10-10 at 2 28 41 pm](https://f.cloud.github.com/assets/1495261/1310591/c4171974-31f3-11e3-82ff-02e970c3fef7.png)