Yes, definitely charge more, because your expenses will be higher.
AHow much will they cost you in terms of ingredients and labor?
AI would absolutely charge more, with all that mixing and color you would need to use.
I would charge more. Once you got the batters mixed up, it wouldn't take that much more time to do, maybe 3Xs the time to scoop. But you get to judge how much is a flat out increase in labor and how much would be a charge for the hassle of doing it.
I would charge more. It is more work for you than a typical cupcake....
I don't know why I had never thought of doing cupcake batter like that before. I love it!