You can copy any of them you like (minus custom graphics, of course), but unless you're using vb3.0, you'll have to do some tweaking.
The easiest way for you to do it is to select the style you like, then view the source through your browser. Look for the hexadecimal color names.
The old PU colors are still in one of the stylesets. I saw it the other day when I was doing something. I don't remember which one though, so you'll have to look.