I have permanent color and have no problems with using Affirm relaxer. The key is to make sure your hair is strong and healthy and make sure there's enough time in between the two chemical processes.
IMO, 2-3 months is fine. I colored my hair in august and will relax again the end of October or the beginning of November. Most stylist recommend 2-4 weeks before applying color after a relaxer.
Remember, "color a perm." I colored my hair a couple of weeks after I relaxed with no problems. If I had waited to color too long after I relaxed, then I would have to wait even longer to relax next time. I hope that makes sense.
If you perm in October, then color in December, then you won't be able to perm again until maybe Febuary. Never perm a color. I hope this makes sense.