If your phone is fully connected to the Internet, clocks become green, if no Internet connection - clock restores original color
Phone can be connected to the net without Internet, so clock keeps original color
All Jelly Bean and KitKat devices should be compatible. Early versions - should work too.
It changes only text color, not graphics
- LG G2
Added some code for Android 2.3
Added ability to change colors (please reboot after that)
Special thanks to dk_zero-cool for solution