Without the glint, water breathing and night vision potions are quite similar to water/thick/mundane/akward potions. Also, overall most potion colors are confusing and must be updated to be distinguisable
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Also hard to distinguish: Poison and Luck.
Can confirm, the removal of glint made them much more distinguishable, but they can still be improved. I imagine this is a valid issue as many similar reports about spawn eggs have been triaged and resolved