I'm very familiar with CSS, and I have looked at that FAQ page (no help), but the problem is, I don't know what specific link code (there are several) to use. I've been able to change link color for other places, but not those in the area I mentioned.
There are links for (at least): wikilink1, wikilink2, urlextern, windows, interwiki, mail, mediafile... Some of those are self-explanatory, obviously.
Here's a screenshot illustrating the section I'm talking about:
I will try adding a userstyle.css into conf. Monobook supports user styles by adding a screen.css into its tpl/monobook/user folder.