Added support for light mode terminals and custom colors

[the-phinet]

I always thought the -v flag was broken, because it would spit out a half dozen blank lines for every request. Turns out it was white text on a white background. This pr should fix that for most people who have the same issue.

[missionfloyd]

        COLORS_DEFAULT["debug"] = "0;39"
        COLORS_DEFAULT["info"] = "1;39"

This should be all that's necessary.

[the-phinet]

You're cool with changing the default colours?

[mikf]

I would be OK with it if they produced identical or at least similar results, but 0;39 is not at all the same as the current 0;37.

[the-phinet]

For reference, this is what outputs look like on my end:

        | dark | light
--------|------|------------
release | okay | unreadable
--------|------|------------
colors  | okay | okay

[missionfloyd]

The termios module isn't available on windows.

0;37 is much brighter here. I guess it would ultimately depend on the color scheme.

[the-phinet]

Interesting. I'll change it to default windows to dark mode, if I can't find an alternative

Edit: done