Colored search results based on forum

[bluecat]

I did a search for something like this, but couldn't find anything.

I have a somewhat devided forum, or groups of people. I'm trying to make it so when someone clicks on the "New Posts" (since last visit) link, when they get their results, certain forum results will be highlighted in light red for example and the others will be their regular color (gray or white for example). This would provide a quick reference for the desired results.

Or, a mod that allows users to specify "which forums" they will see in their results, or the option to remove certain forums from being displayed.

Thanks.