Most of the names you see are just that..names. There are 3 basic colors in dragons,red,orange and yellow. All of these colors phases have different names depending on the breeder. Pastel is a little different. Pastel is the name given to the original hypomelanistic animals. Hypomelanistic animals are a type of albino, they are missing or have a reduction in the dark colors (black/ brown).Although hypomelanistic means "having less than normal melanin" which leves room for much interpretaion, the name was originaly given to animals with such a reduction in melanin that they had clear claws instead of black claws.