Talk:Dragon Types/@comment-90.229.131.220-20130620163114/@comment-4830404-20130625201027

When rolling for Diamond, only the original colors are considered. Breeding Night + Virtue will count as only two colors (Black and Pink). Atlas + Fireworks would be four colors (Mythic, Red, Yellow, Blue).

This is discussed on the Diamond Dragon page in the Special Breeding Rules section, among other things. There are lots of special exceptions everywhere >_<