Please allow setting color for matching line

[depesz]

First of all - thank you for amazing tool. It's beyond great.

Describe your feature request

Sometimes I'm searching for short/small matches, and need to see context. While the match can be highlighted, it's not always obvious where it is.

For example, using gnu grep, I did set:

export GREP_COLORS="sl=48;5;240:mt=38;5;226;48;5;124"

and this lets me see matches like this:

As far as I understand rg --help - I can't have this configured like this in ripgrep.

I think it would be worthy addition.

[BurntSushi]

I am unsure if this is worth adding. And it probably isn't something I'll work on. But I could probably review a patch that added it. Including updating all of the docs about color configuration.