Visual mode highlight contrast in light theme

[jashephe]

This may be a result of my protanomaly, but I have great difficulty distinguishing visual mode-highlighted text in the light theme from the background color.

In the dark theme, the difference is more apparent because of the more obviously different hue of the background color.

If anyone else is having this problem, I imagine that it could be fixed by slightly increasing the contrast of the visual-mode color in the light theme. Of course, if this is just a result of my vision, I'm sure I could tweak a personal fork to suit instead of having the official theme changed. Thanks!

[freeo]

I will adress this in the future with a variable like f.e. `visual_select_high_contrast', when I've decided how to implement options in general.