What sort of combinations of red/white/black are you looking for? I have some red-and-blacks in my Apex & Abyss den and can breed some red-and-white wolves as well.
Would you potentially be interested in this guy? I bought him as an impulse but haven't done anything with him since. His base is Lava, which looks orange but is in the red range, so I wasn't sure if he'd work for you or not. I was thinking around 5k pebbles, but I'm flexible. (Picture should link to his profile.)