Here's a bit of knowledge that I did not really need. Apparently wolf spiders have a favorite color and they like it a whole lot.

Spiders have dichromatic vision, which means the light-detecting cells in their retinas only see two colors: ultraviolet and green. As it turns out, they really like green!

Researchers figured it out after doing a study on wolf spiders. The female specimens were shown videos of courting males on various backgrounds. The reactions were stronger when the background was green.

“The assumption was wolf spiders don’t pay attention to color," one of the researchers said. "But we found that isn’t really true.”

So, you may want to think twice when picking out your next bedspread.