Added New Theme: sonicradish (256 colors)

Forked from muse theme and inspired by mustang vim theme

Dark Background and Solarized Dark look great [ tested on OS X ]

Screenshot: https://img.skitch.com/20120221-eb1cxey5aun84tb1ak7fm376k.png

muse: https://github.com/robbyrussell/oh-my-zsh/blob/master/themes/muse.zsh-theme
mustang: http://hcalves.deviantart.com/art/Mustang-Vim-Colorscheme-98974484http://hcalves.deviantart.com/art/Mustang-Vim-Colorscheme-98974484