Good suggestions, but my existing wallpaper has bubbled due to the water intrusion. So I could just take it off and paint, but I'd really like to replace it. If I replace it, I can get away with just doing the two outside walls to match. If I stripped and painted, I'd have to do the whole bedroom. Camping season is upon us, so I need to resolve the problem quickly and wouldn't have time to strip the whole bedroom.
Maybe I'll call a RV repair place and ask them what type of wall paper I should use.
Probably should have thought of that before.