I am going to be making a cake for my niece soon and I want to top her cake with some purple butterflies. I want to use pearl dust to make them glimmer, but I am uncertain which colour to use. Which one would be better, white or silver?

I would use the color of the butterflies if I'm using pearl dust. Now if you use edible glitter, just use white.

Thank you auntginn, it didn't cross my mind to use edible glitter.