I was looking for some red, white, and blue recipes (stay tuned they will come tomorrow), I found a website talking about how blue foods (other than blueberries) make us lose our appetites.
Think about it…other than blueberries, what food is blue?
There is blue curacao, a liqueur used in some tropical drinks and there are blue popsicles which always made our tongues a weird color. While the purple popsicles tasted faintly of grape and the red popsicles tasted of some miscellaneous berry — blue popsicles were flavorless.
According to this article, blue is an appetite suppressant so people should eat off of blue plates and put blue lightbulbs in the refrigerator.
I cooked a purple potato recently and it split open and turned an odd blue-gray. It was not appetizing at all.