ah yes, I was thinking that it would be difficult for people having colorblindness as well, and yeah for ppl to distinguish the colors in general, especially the pink and purple. The vision was to include as many colors of the rainbow as possible. But adding light to them made it a little bit tricky to balance. Unfortunately time is a big factor for designing such intricate ideas that will ensure no confusion. It is very insightful to hear such feedback :)
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ahh i can see you had already given this a good amount of thought! (yes, the 'colors' of the rainbow idea struck me! and i think you also attached a unique musical note to each; do re mi fa so la ti?) i am sure you'll be able to find a way where you keep the essence of the idea intact, while enhancing accessibility...once you work on it after the jam!
time is such a BIG factor yes