Im still a lazy bastard, and I don't feel like converting all of these pic's into spray paint's. So you can do it yourself. Use this program, with these images. (Or whatever image you prefer.)

This program is pre-steam. You're gonna have to change the name of the file from pldecal.wad to tempdecal.wad

Make sure it's in your dayofdefeat\dod folder. And don't go into options once you're in game, because that will erase it.