Allow manual selection of terminal foreground and background

[Evpok]

I usually use a light theme, but for compatibility reasons, I like to keep a black-on-white terminal. As of now, terminal fore- and background are inferred from the parent's theme. It would be nice to have an option to override that and set those colours manually.

[pelmers]

The terminal pulls the colors by inspecting the '.terminal-pane' element.

So you can still configure the colors by manually specifying the 'background-color' of the '.terminal-pane' element in a custom stylesheet (~/.atom/styles.less)

[Evpok]

It does work, (and thank you for the tip!), but it would still be nice to be able to configure directly, especially since the other colours are configurable.