according to breed standards Thai Ridgeback dogs have 4 accepted coat colors:
1. Red tamarind seeds — From light red to deep red. There may be a black mask.
2. Black Completely black all over
3. Sisawat Blue-gray or silver-gray
4. Lotus petal color Pale yellow or cream with a faint pinkish tinge.
Actually, there are many colors such as white, striped, and tiger striped that are seen raised in Thailand.
The fur should be of a single, uniform color all over the body. A little bit of white may be found on the chest. But generally there should not be large white patches.