Some Things to Keep in Mind
Dogs that have shown past health issues
with their skin and/or coat should not be dyed, as any substance would increase the odds of some type of reaction.
Any dog with any open sores, dry skin issues, hair loss issues or any other health concern of the dog's skin or hair both past or present should never have this done.
When polled, there are the same amount of dog owners for this as against it. Although, out of those roughly 50% of dog owners who are not outwardly against the idea, only a small fraction of them actually have this done to their dog or are planning to.
Those who argue against painting a dog do so because:
* It is an unproven, yet popular theory that when a dog is dyed, they can become self conscious.
While there is no method of knowing if a dog is aware that their coat is a new color (especially in cases of painting the coat a very muted pastel color) or if the dog is aware, if this bothers him or her...