Add new dark theme murmur

Add new dark theme based on understated, but changed a lot. Murmur can be easily modified by changing locals values.
![screen shot 2013-09-25 at 10 37 59 pm](https://f.cloud.github.com/assets/3297539/1210600/52a1a3d4-25fc-11e3-8578-867e2243ec3e.png)
![screen shot 2013-09-25 at 10 38 09 pm](https://f.cloud.github.com/assets/3297539/1210602/5787bbfe-25fc-11e3-8576-ce9f79650360.png)
![screen shot 2013-09-25 at 10 38 23 pm](https://f.cloud.github.com/assets/3297539/1210603/5a3fbf68-25fc-11e3-866d-b50e4d2106a8.png)
![screen shot 2013-09-25 at 10 38 30 pm](https://f.cloud.github.com/assets/3297539/1210604/5c82d846-25fc-11e3-8e38-5122ec66fac6.png)