If you're thinking of doing some sleeving and want to use black or white, I have some nylon multifilament that I'm selling. only two colors-black and white. it's non expandable-techflex and MDPC will expand quite a bit so it won't slide over connectors but for a PSU that won't matter too much. the perk is that it's soft-feels like cloth, and you can blow into one side of it and air will come out the other side even if it's bent-there's that little in terms of gaps between the inside and outside. there's no way you can see thru it. If you give me your address I can snail mail you a sample. Best, John vanarnam@stanford.edu