Color changing effects/contrails

[*JP*]

As most of you have seen Pimp Megatrons mods and the color changing effects and contrails, My question is how would I do something like this. If someone could explain how or maybe post a tut or a link to a tut, It would be alot of help. Thanks

I've tried the search option but returned no results that I am looking for.

[G.I.R.]

Contrail Editor. Use Search next time.

[*JP*]

Thanks and I did try the search option but resulted in failure, (tutorial wise) but that is what I was looking for. Thanks Again GIR

[G.I.R.]

np, jp. lol