MahApps/MahApps.Metro — pull request #1220 by punker76 (2014-03-26 08:59:37+00:00)
Title: fix circle button/togglebutton coloring

before
![2014-03-26_09h08_33](https://f.cloud.github.com/assets/658431/2522668/ccb1bf86-b4c4-11e3-9397-d6032fe3d115.png)
![2014-03-26_09h08_44](https://f.cloud.github.com/assets/658431/2522669/ce712e7e-b4c4-11e3-87bf-771796c14d8b.png)

after
![2014-03-26_09h54_35](https://f.cloud.github.com/assets/658431/2522670/d525a86c-b4c4-11e3-9778-02e787f72e91.png)
![2014-03-26_09h59_22](https://f.cloud.github.com/assets/658431/2522676/f2989cd8-b4c4-11e3-8fa1-8fea258cdb26.png)
![2014-03-26_09h54_43](https://f.cloud.github.com/assets/658431/2522671/d7478de0-b4c4-11e3-88b0-b33fccdfeed5.png)