Darkrom, I'm essentially in the same position as you
...
I'm colour-blind as well and I have difficultly sometimes when determining how vaped my herb is, although, I usually just go by the taste and stop when it just tastes disgustingly like popcorn. It tastes so good the first 2-3 hits, it's crazy how drastic of a change it goes through.
I don't really know how many hits I tend to take, on average I'd estimate something like 6-9, perhaps more on some occasions!
Anyway! I have a question that I've been meaning to ask, and it's not really a question actually, but if someone has any input it is appreciated...
Essentially, I just have trouble getting
very vaked, I seem to plateau after a trench or two, and it seems as though I cannot get higher despite how much more I vape, I simply don't feel anymore impaired
I suppose however, I do have a limit as to how much I can vape before my batteries die on me, I have tried vaping quite a bit. I've also been meaning to invest in the PA I'm sure that can potentially solve my issues!