What is the name of that candy that when it is bitten makes some light in your mouth?

Question

Some years ago, I was in the USA and I tried some candies. When you bite them, and if you were in a dark place, and open your mouth, you could see some lights, like little sparkes in the mouth.

I do not remember the name, can you help me?

Answer 1

i think Pop Rocks did that at one point, didn't they?

Answer 2

I think your think of Lifesavers Wintermint hard candies