Add statusbar clock color, (1/2)

Ported/inspired from SlimRoms:

https://github.com/SlimRoms/frameworks_base/commit/42bf1be5fbeaab01131bc2c56d879fc7c82fb1f6
https://github.com/SlimRoms/frameworks_base/commit/489d80a3b13a90a991cffd6e9780b71faf132fda
https://github.com/SlimRoms/frameworks_base/commit/1be587e8864a8de8ba8ee53c2c0685fa081f0cec