hi danny
if you are using mozilla firefox it's better to install firebug and you can find any class you need to change easily
for example to change userinfo font color you need to to search for following in your templates (in CSS templates) :
Code:
.sidebar_container {
.member_username {
and add these :
Code:
font-family: blahblah
font-size: blahblahpx
color:#blahblah
you need to play with different classes and values to find correct place