I trying to create a pretty cheesy effect as such in this Earth Wind and Fire video, Let's Groove tonight on you tube. http://www.youtube.com/watch?v=_XOY7lsBVpo (the effect shows up at minute 1:05). I'm looking to make some kind of rainbow blur path. I'm not too experienced in After Effects, I've just been teaching myself with tutorials from Lynda.com but I do feel like I'm starting to get a somewhat good grasp on the program. Any tips you can give would be appreciated! Thanks for your help!
We were talking about how to do this just a little while ago on this thread:
I think that I might start with CC Time Blend FX to get the varying colors, rather than using the Echo effect.
BTW, if you're teaching yourself, After Effects, I recommend starting here.