That would look cool with multi-color led bulbs in them.
if they make a battery that small, it would make a great 100 yd slow moving pistol round tracer lol
I thought it would be easy to put a piece of steel inside and paint the tip green. It would be a great job to develop new rounds. I actually need to place another order with Lehigh Defense. Cool looking round with a lot of tech inside.
IANAL or a gunsmith or whatever that would be called.