please add colors for the FoldColumn

[dubst3pp4]

Hi and thanks for that wonderful colorschema,

I would like to see color support for the FoldColumn of Vim (which you can enable with :set foldcolumn=1).

At the moment its background is a light grey with cyan text, which doesn't fit into the color schema.
At the moment I've set the colors of the FoldColumn to the same as LineNr - but I think it would be better to give it a darker textcolor to distinct both columns.

Before:

After:

Thanks and best regards!

[haishanh]

@dubst3pp4 Thanks for opening this. I just pushed a commit to use #333333 as the foreground of FoldColumn, I want the text color to be darker than LineNr.

[dubst3pp4]

@haishanh wow thanks! That's exactly what I've done in my configuration :-)