There is a groomer in a couple towns over from where I live... they dye there dogs. I think it looks EXTREAMLY silly! A dog is supposed to look "normal". But then again, I dress my dog in clothes and bows.

But if it is safe, go for it. But it just looks weird. While I was driving by one day, I saw a hot pink, all dyed, poodle running around in the parking lot.... and it is right by a busy 4 way intersection. My dog aint going there!