[Feature] Support multiple colors

[stho01]

Is your feature request related to a problem? Please describe.
Could be nice set forground and background colors based on RGB values.

Describe the solution you'd like
Use RGB values if possible

Describe alternatives you've considered
Additional pre defined colors in the Console Color Enum.

http://pinvoke.net/default.aspx/kernel32.SetConsoleScreenBufferInfoEx
https://docs.microsoft.com/en-us/windows/console/console-virtual-terminal-sequences?redirectedfrom=MSDN

[robinbaxon]

This would be a very nifty enhancement! Are we targeting multi-platform eventually, and if so: should this feature be targeting win32 only because of cross platform console limitations?

[stho01]

Targeting multi-platform is on the paper as requested here, (#7).

So yeah, it is smart to indicate that this feature request is win32 only, I just tagged it :)