Many thanks, as always, to @Mark_Kriegsman for sharing his FireworksXY code!
Source: https://gist.github.com/jasoncoon/0cccc5ba7ab108c0a373
Originally shared by Jason Coon
Happy Independence Day! 
http://www.youtube.com/watch?v=ISTYxVrddZY
Nice but… it looks like the fireworks display you would show for Timmy’s birthday.
Where’s the 4th of July stuff !?
Yeah, I need to get it doing more than one at a time, huge clusters, etc. All in good time. Maybe next year, JP. 