If you created backup and this not work, I don't know what the problem... I can think about some stuff like, maybe you have after applying this tweaks or maybe you have installed F.D.B theme or Faster transition (not from my app) or Phone UI MOD all this stuff uses another theme and my tweak work on the original files from base/blanco.. Maybe this do a problem...

For the major problem, you need to reflash your device....
I understand you used Tweak M-2 - most of the people do mistake when writing the color code, like symbol # before the code, that don't need to be written.. It causes reboot-loop.. Or if you sure you wrote correct code, without symbol #, I can think about one thing - the system don't like this color...