When doing battles of course it helps to know what color you are battling. For instance a dragon where first element is rainbow will emit blue bubbles so I will battle with the color that beats blue. Unfortunately I have several symbols that I don't know what color they emit. I'm hoping someone can help with any of the ones listed below. I hope I made sense.lol.

Symbols
Black Ghost
Purple 5 pt star
Orange Flower (Crocus?)
Bomb
Marble Rock(not key)
Yellow Star with moon

Thanks your help!