Thanks to the title and layout, it is fairly simple to identify the influence for this puzzle as a Match 3 game. Fortunately for us, we don’t have to swap any cupcakes, as there are already a sequence of sets lined up to score. Keeping track of the cupcakes removed at each automatic step, and sliding the other cupcakes down to fill in the holes, gives us the following series:
The cleared cupcakes in each step form letters, spelling out the answer FUNFETTI, which is also a way to get all the colors together into a single cupcake.