Only three basic colors are known in China. Fawn, black and cream, with the color fawn strongly dominating with over 90%. Dilute colors are unknown and also not desired. Historically a normal evolutionary process , as dark pigments also protect the dog better against UV radiation and thus against skin cancer and skin inflammation.
The western Shar Pei are now available in all possible domestication colors, since colors do no longer correspond to their original purpose, but to our human imagination.