Rainbow Firework

#luckytntmod:concrete_powder → Cyan Concrete Powder, Purple Concrete Powder, Green Concrete Powder, Light Blue Concrete Powder, Pink Concrete Powder, Orange Concrete Powder, Light Gray Concrete Powder, Brown Concrete Powder, Gray Concrete Powder, Blue Concrete Powder, Red Concrete Powder, White Concrete Powder, Lime Concrete Powder, Magenta Concrete Powder, Black Concrete Powder, Yellow Concrete Powder