PDFWAC 260-28-050
Colors—Registration and fees.
(1) Racing colors must be registered, and authority for their use approved by a steward. Approval will be made annually when the owner's license is approved.
(2) Colors registered with any racing commission or with the Jockey Club will be honored in Washington and only the registrant will be permitted to use them.
(3) No person may start a horse in racing colors other than those registered in his/her name or stable name. A temporary change of racing colors must first be authorized by the jockey room supervisor.
(4) Any disputes related to racing colors will be decided by the stewards.