Shoutbox, edit the looks of messages?

Hi there.
I've got a problem with the "Shoutbox" module I can't seem to solve.
I think the space between the name of the poster, and the message is too big - how can I modify that?

I thought it might just be some paragraph styling, but I can't seem to locate where to change it..

Also.. Is there somehow the Name of poster could be a different color than the message?

See what I mean here:

http://krasch.dk/various/shoutboxhelp.jpg