Racing colors shall be registered with the clerk of the course when registering a horse within an inclosure, and authority for the use of such colors must be sanctioned by the Board. No colors may bear any symbols or markings which could be interpreted as for advertising purposes. Any difference between claimants to the right of particular colors shall be decided by the stewards. The registered colors of an owner may not be registered by another, except after five years of non-use or abandonment by the registering owner. Any temporary change from the registered colors of the owner must be approved by the stewards.