[Xtrato]

I couldnt find it off the bat , but you can overwrite them in any additional.css file ..

.userprof_headers {

}

and the borders too:

.userprof_headers_border {

}

and if that doesn't work ,its because the CSS comes before the declaration of the stylevars , in that case add the " !important " declaration to your style such as :

.userprof_headers {
background-color: blue !important;
}

--------------- Added [DATE]1294350672[/DATE] at [TIME]1294350672[/TIME] ---------------

oh by the way your forums are pushing against the borders . you should add this to your body wrapper:

.body_wrapper {
padding: 0 10px; 
}

it looks neater .