Color is very important for food. My favorite story is the one [1] with wine tasting, where the same white wine was tasted twice by the same people, in one case with tasteless red color added. The taste was reported to be completely different. While it might be contributed to wine tasting being total BS, my favorite part of this study was that its author became a wine maker :-).
[1] https://www.realclearscience.com/blog/2014/08/the_most_infam...