I have no specific color for certain sounds (drums etc) but I tend to colorize pads in same(ish) colors, just in slighly different tint.

The witty part of using colors comes when creating a change in pattern. A bassline, for instance, would be dark red when in intros & outros, playing the simple line, but when the track really kicks in, and the variation starts, then color of the clip is slightly lighter.

Speeds up finding the right spot and creating different structures.