Gutter icons are always black with light themes

[eugenesvk]

I would like to reopen https://github.com/Monnoroch/ColorHighlighter/issues/183 since there seems to be a solution to this ST3 bug, where gutter icons generated by https://github.com/Monnoroch/ColorHighlighter are always black. There is a similar issue in an alternative package https://github.com/ggordan/GutterColor#icon-tinting-and-light-color-schemes, which is solved by fixing the color scheme (by creating a special scope for the addon, which fixes default ST3 color transformation in the gutter, allowing to properly display color icons).

However, this fix doesn't seem to work directly with your package (i.e. gutter icons are still black even in the fixed theme). Would you please try to look at how they fix it in GutterColor and implement a similar fix? I'd really love to avoid having to use two similar addons and yours is better since it's not limited to gutter colors, but also does inline highlights. Thank you

[ghost]

@Monnoroch, please look at this commit. I don't know Python, so that's why I can't contribute to this plugin :disappointed:

[Monnoroch]

Oh, thanks guys, I'll try to find some time to implement it.