
Gordon Setters are Black and Tan, although a small white spot is permissible an the chest, this does not constitute tri colour. No colour other than Black and Tan is permissible. Iv'e checked the Kennel Club breed standard. If this person you mention has created tri colour dogs, they are mismarked and should be sold very cheaply as they are 'faulty goods'.
I just noticed your spelling of 'colored', you'll be in the USA then, I'm in the UK, but I still bet the AKC standard calls for Black and Tan only.
Dawn R.