Where a Havanese puppy does not fall into one of the colour choices listed on the registration form, a breeder may choose to identify the colour/pattern as “other” and then define it. CKC may then register according to your description or they may change it to the closest identification they allow. On-line registrations do not have this option and only allow the choices listed on our colours page.
Registration colours are based on the dominant colour(s) at time of registration. Seeing as genotype (the gene combination responsible for the colour) is often unknown, choices are generally made from phenotype (what the dog looks like) at the time of registration.