http://i46.tinypic.com/2wdyaeh.jpg bump EDIT by Moderator: merged posts, please use the edit button instead of double posting.
Fireworks just came out in 1.4.6. That's a real recipe. I think the bug is the firework star losing its color, right?
Take 'em all out and add them back in one-by-one, starting with the ones that others depend on. Don't forget to report back when you find out what's causing it, we're dye-ing to know. Get it? Eh? Eh? I'll see myself out.