This is a once-in-a-lifetime opportunity to get some free sparks. I'm pretty much the only person together with Reynolds who properly know how the particle system works.
I have them in 4 'versions': realistic, blue, purple and green.
The realistic and blue ones are the same (length, velocity, fade time, etc.) but different from purple and green, which are the same but different from the other two.
I can't be fucked to make pictures of every single file but here's what the realistic one is like:
Rest of them is like this but doesn't fade into another color, just a bit brighter.
You can adjust them a bit if it doesn't fit to your skins or liking but I highly doubt you know how.
http://www.sendspace.com/file/uq6m9y