TermLogger uses hard-coded colors

[JarrettBillingsley]

I was hoping they were configurable, but:

simplelog.rs/src/loggers/termlog.rs

Lines 173 to 179 in 195361c

	let color = match record.level() {
	Level::Error => Color::Red,
	Level::Warn => Color::Yellow,
	Level::Info => Color::Blue,
	Level::Debug => Color::Cyan,
	Level::Trace => Color::White,
	};

I don't think this would be hard to add, so if you like the idea, I could make a pull request.

[Drakulix]

Yes, this could definitely be an option for simplelog's ConfigBuilder.

Just make sure to keep the current settings as defaults, when you make a PR.
Also please add a re-export for termcolor::Color, so that users do not need to add the dependency themselves.

[JarrettBillingsley]

/pull/69 :)