[SOLVED] Changing font & link colours on seperate pages?

Hi there, firstly apologies if this has been answered a gazillion times, I have looked through a good 20 pages of threads and not quite found a solution to my problem!

Im using the new version of this them and the newest wordpress, all is going fantastically!

I have however just added a forum page - my other pages are dark with light fonts/links - my forum page (a widget which skin I cant change ) is light and my txt is therefore not clear at all.

I have been fiddling with CSS inserts for an hour I can change the link colours however they are changing on every page not just my forum one. The body text I cant seem to change at all??

Can anyone help me I would be hugely appreciative!

Many thanks

Scar