I was shopping at the dollar tree and found a star ice cube mold like this one from Wilton. The one from the dollar tree worked fine, I bought it last year close to 4th of July. I prefer the mold over the mini star cookie cutter because I could mold in ten at a time.
The blue star is my favorite. I have a hard time finding dark blue candy melts so I bought dark blue candy coloring and mixed it with some baby blue candy melts. I used quite a bit to get it to the dark blue.