Ohio Nationals were rather humorous, all the "self blue" silkies had Lavender on the cage tags and were crossed out and rewritten with self blue. The whole self blue name just confuses most people, rename it entirely across the board as Lavender. With chocolate, there are very few actual "chocolate" birds, seramas being the one coming to mind right now. White Crested Chocolate polish is what everyone knows them by and luckily what what they are listed as in the standard. Where the need to know the Dun factor really plays in, is in the genetic end and breeding, especially if you are using polish to introduce the color into another breed.