[Feature Request] Custom Colors

[p0da]

Would you consider adding the ability to specify custom colors by rgb or hex notation? Thanks.

[dalance]

Currently the terminal library used by procs doesn't support custom colors.
I'll try to add custom color support.

console-rs/console#72

[dalance]

I added 256 color option like below, and released v0.10.4.

style = { Color256 = 223 }