I just got the new Sportsman's Guide catalog. These were in there. I guess if you really want to make your 1911 fugly beyond belief these might be for you. Warning: Opening this link may make you .
Recover CC3 1911 Grip and Rail System - 611867, Grips at Sportsman's Guide
It does run against the Gun Enthusiast Code (G.E.C) of:
Hold on, I just thought of another good use for these things: Buy one and put it on the gun. Then when your wife asks if that's a new gun, reply that it is not and is just a plastic cover that makes it look completely different. Show her how the cover comes off. Next, remove the plastic cover thingy and throw it away. You now have the ability to bring any new gun into the house and if the wife asks: 'Is that new?', you can say that, no, it's just another plastic cover thingy. This will work for many handguns, but if you push it too far, could backfire. If you significant other is not too observant, you can use this to slip a new pocket gun past him or her, but if you try to bring a new Mossberg 500 into the house with this excuse, you will most likely fail.