Obesity food without color.
Without the artificial color (like blue 3 and red 4 yellow etc), many of the junk foods would look pale (although probably not white).
during the long hunter gatherer evolution, foods with more color (deeper pigments) signaled the brain that it looks more nutritious, and therefor the brain wants it more, (paler things could be diseased or weaker). So we have in a sense evolved to like colorful foods more, subconsciously, until we realize this and learned of it, by then become conscious of it. In which case you see threw the “allusion”…If you do become conscious of it.
*One reason why junk food seems so “good”.