I had lunch at our local Wendy’s yesterday. Looking up the street I was struck by something. See if you can spot it…

Here. I’ll make it a bit more obvious in this collection of logos…

Notice how all of these companies use shades of red and yellow in their logos? One might argue that Waffle House doesn’t really have red, but their buildings have red trim just below the roofline. I couldn’t find the logo for the L’il Cricket convenience stores (no website), but their logo is also yellow and red. One other one not visible from the photo above, but with the same color scheme is Pizza Hut…

I have to wonder why all of these fast food and convenience centers use the same colors. Is there something about yellow and red that imply speed or quick service?

Perhaps there is something even more basic going on here. Take for example, the Plain Tiger Butterfly (danaus chrysippus). The Indian Fritillary Butterfly (Argyreus hyperbius) and the Leopard Lacewing (Cethosia cyane) exhibit Batesian Mimicry, so named after naturalist Henry Walter Bates, who first documented this phenomenon in the Amazon in the mid-1800’s. In this example, the Plain Tiger is toxic to predators, whereas the Indian Fritillary and the Leopard Lacewing are not. However, these latter two have evolved with the same coloration so that predators will avoid them as well. Images from Wikipedia appear below as examples. The first is the Plain Tiger, the second is the Indian Fritillary, and the third is the Leopard Lacewing…

Plain Tiger Butterfly Indian Fritillary

Oddly enough, these also seem to be in shades of yellow-red-orange. Perhaps there is a bit of mimicry going on with the fast food and convenience centers as well. In the case of the companies, it would be more like Müllerian mimics (named after Fritz Müller) where the species do share related characteristics (or, at least, one would hope.)

I guess there’s something about that yellow-red combination that has a primal connection with "food." In the case of the butterflies, it’s "Stay away!" The opposite is true with the companies with logos pictured above – "Come here and eat me!"

 

UPDATE:  Thanks to the many comments and suggestions, I have two more data points…