User blog comment:Kogath/Monster Hunter 4 Ultimate for the Nintendo 3DS/@comment-26150929-20150813060703/@comment-24638955-20150813173848

It's better to just think about where they usually are and the few exceptions.

Orange is the body and tail, red for head, and white legs for wings and extremities.

Exceptions I know:

For Orange Garuga on Wings, Chameleos wings, Daorah Wings.

For Red Seregios legs, Chameleos Tail, Gogmazious Wings, Raths Legs.

For White I don't remember exceptions now.

Will edit for more info on this post.