Small fixes to default blue

[snipe]

Somewhere in the massive reworking of the skins, some colors got a little odd on the default blue skin. It's a tiny thing, but it's been bugging me.

While normally we want link colors to be different based on whether they are a link, a hovered link, or a visited link, the nav options on the settings page doesn't really adhere to those rules (and I think it looks weird when they do, especially with the visited link color we were using, which was a lot colder than the warmer blue we use in the header.)

Old:

New:

I also fixed an issue where text on btn-default and label-default was blue when it should have been a dark grey.

Old:

New:

This basically restores the old behavior.