I’ve always wondered if part of the reason the “clear” craze for sodas died off is that you didn’t have the right signals to tell you what it tastes like.
What about canned soda? If drinking from a can it's pretty hard to see what color the soda is, without making a point of checking.
I wonder if the can color is then the signal?
color is probably associated with certain flavors. For most people our eyesight is used to identify things more so then other senses. If you don't see the color you probably have to work slightly harder to identify what is being eaten. How many people have a tongue so accurate they can eat/drink food blindfolded and identify it?