There's really no reason weed would give tracers or visuals. It could enhance color though I'm sure. And it can definately make your hearing drop in and out if you get insanely stoned.

Shrooms make up my definition for tripping. And for me my thought process is the trip on those, rather then the colors and stuff. They're both fun though.

Pot can make you half trip I suppose. If half the trip is your thought proccess and the other half are visuals.