Color theme matcher logic issue

[cg505]

Check out ColorScheme.equalColor(). Suppose we are comparing against a theme that is the same as ours, but it also has useCursorColor, useHighlightColor, useBadgeColor, or useBoldColor (and this does not). Since we only check the instance variables, we don't catch the discrepancies and so the match will appear valid.

I ran into this when tweaking some themes and it was really counter-intuitive and should be pretty straight-forward to fix.

[gnunn1]

I have fixed this and re-worked a few things at the same time as I noticed a couple of other bugs. Please do test this out, the color code is a bit ugh and could really use a rewrite but didn't go that far this time, would appreciate some validation that I didn't break anything.

[cg505]

Seems to be working pretty nicely. Thanks for the update!