Traits
Polychrome (Uncommon)
An extension of regular "Shinies", Pokemon with the Polychrome trait can be any color and feature any kind of patterning that don't normally occur in their species.
This can either be their canonical shiny colors, or a different palette altogether!
Additionally, Pokemon with the Polychrome trait may have small spots/patches of constantly shifting colors.
Domestic (Uncommon)
A modification of the Pokemon's original species or breed, cannot be used to turn Pokemon into wildly different species, must be adjacent to their canonical one.
For example; A yamper could be turned into a poodle, or a Pikachu could be turned into a gerbil!
For mythological creatures or Pokemon that aren't based on (real) animals, try to find real life creatures/plants that are/look similar enough, you're free to take some creative liberties with this.