its maybe not very new idea to make particles with trails, but this would bee
something for next sylvester...

just klick on the screen to see a random colored particle system
.colorBuffer.clearAtRender = 0
and using a black image as overlay with a blend of 5

does anybody knows how to get this kind of trail effects on top of a other
camera image without imaging lingo?

may be in the next version of the shockwave3D xtra!