Colorize taskbar icon

[leonid1812]

Please implement the following colorization feature for taskbar:

• show process indicator as red color when a pomodoro is running;
• replaced color with red to green when pause started

[leonid1812]

this feature will show the current status of pomodoro.

[floatas]

Coloring is implemented, but a bit differently. Green - work Red - work ended Orange - break

[swtch1]

I believe this is done. I am on v2.0.141 and this is already working as described.