How to remove outer border from table headers?

[triff]

My questions is how do you remove the outer border of the category strips and table headers?

If you take a look at the right column of my front page (it's a vBa page), you can see that the category strips and table headers of the cmps modules are surrounded by a tiny blue border, which ruins some of the aesthetics of the site. Any ideas how to remove those? Or how to make them black? I've been experimenting around in the style manager, but haven't figured it out.

Any help would be very much appreciated.

(by the way, if I use that particular style for the forums they too exibit the blue border around the category strips and table headers, so it's not the vBa CMPS that's the problem)

SGL.