I didn't even know that stuff was still out on the market. Ron Popeil (of Ronco fame) ran an infomercial on something called GHC in the mid-90s which was supposed to be used to cover up bald spots temporarily. You can probably go down to the hardware store and buy a can of spray paint to do the same.

Why would you want to do something like that anyway? It's so fake. You'll know that it's not your real hair even if you manage to fool everyone else.