I have searched and can find no sources for 1977 Mercury Colony Park replacement carpet. The closest I have found is replacement for Mercury Marquis 4-door and then buy extra carpet for the back. It seems the fifth generation Colony Park is an albatross for parts! Anyone have sources?
I've used these guys several times, for carpet. I'd call them directly to make sure this will work. http://www.varkmotors.com/COLONY-PARK_c_4588.html
you would be amazed at how good a dye job looks. Get RIT Dye the closest color to the carpet. Get a sponge and a rubber glove. Soak/blot the carets in the car, let dry and you got new carpet . The back carpets usually have much less wear.so just replace the front.
Did you get a carpet set for the CP? I was looking into it also and wondering if the four door marquis would work.