Okay, I have a question for those of you who use cartomizers and multiple flavors of juice. How do you tell them apart and keep them all straight? My first brilliant idea was to get colored end caps from Smokeless Image. That worked fine as long as I only had five flavors. Now I have eleven with more on the way. My next brilliant idea was to order some stainless steel cartos and write the flavors on with a fine point Sharpie. That worked fine too, for about ten minutes. Apparently Sharpies are permanent on everything ***except*** stainless steel cartos. Several black stained fingers later I'm back at square one. So, what do you all do? I'm sure there must be a very simple solution that I'm just too dense to figure out.