Add Shoot Fireworks at direction Procedure Block

I was casually working on cauldron to my mod and I've got idea that we should get procedure block that will shoot firework at X, Y, Z, how may at the time and what type of firework with color "if its hard to add Color selection to procedures than use Number block input for example R:255, G:255, B:255" 

That could allow us to make some cool stuff like Fireworks Weapons, Alert Blocks that Shoots Fireworks etc.