feet paw questions

Mainly on the soles. What do you guys use for outdoor soles? I might be taking a commission for feet paws soon, and we're still establishing if they want indoor or outdoor feet. I've got ideas if they want indoor feet, but not sure on the outdoor ones. Anyone have ideas? My biggest thing is they want them to be RED and I can't think of a material that's already that color that I could use. I think I remember someone posting a link to shoe sole material on here?

Also, paw pads -- for outdoor feet what would you guys suggest? I'm considering purchasing premade ones but I'm concerned since they're thick they will be uncomfortable (plus they're for a rabbit so they probably wouldn't match anyway)

Thanks guys!