http://www.tcpglobal.com/kustomshop/ksppgprime.aspx
Not sure if this is the same stuff, I tried to think of one that came in colors. This one does come in black.
I have used both Upol and Slicksand and they both have good points. I have never used the PPG product but assume its pretty much the same.
You need a big tip to spray them.