UI diff colors in version 2.0.20.1

[Samuel Granados]

Please change the colors for displaying file diffs.

In the new version for Windows (v2.0.20.1) when dispaying file diff, in particular the new lines displayed in green they aren't quite readable because the green color is too bright.

It's kind of anoying to the eye and it's definetly not my monitor's fault. (Please avoid useless comments saying to dim my monitor's brightness for this particular issue)

At least, make them editable settings, so users can select these particular colors.
You could also add a little bit more padding between lines since they're too condensed and the typography is very thin, as I said, making code diffs unpleasant to read.