Thanks scunny, that may be just what I'm looking at. Shrink tubing cut into small sections. I've been looking at the color/size selections of the tubing available at the above mentioned stores and nothing they had would work for my purpose. Few colors and too large. Do you have an online source that would have, say, 10-12 color choices in a diameter that would shrink to a single wire? any help is much appreciated

Edit: Can't post pic at the moment. Wanted to show color markers currently on bike. Will try later
[attachment deleted by admin]
[attachment deleted by admin]