Colorful Fireworks! Daytime Sparkles
Its like flak cannons. Just way less shrapnel.
Some Japanese warships during WW2 were so bold that they used colored flak and compete against other ships within their fleet by seeing which ship got more kills.
The color of the flak, of course, would signify which ship got the kill resulting in how many ever points.
Not sure if it was always used for competition, could have been used to give ships their deserved kill tally.