In the Diner in Chapter 5, Yellow says "The problem with menus, they have too many prices and values". This is a reference to Homestuck, specifically a Sweet Bro and Hella Jeff comic where Sweet Bro says "the selection has too many... PRICES and VALUES".
In the heart of Africa's wild grasslands lives one of nature's rarest wonders the black serval.
Born with a genetic mutation called melanism, this cat carries more pigment than usual, giving its coat a deep, velvety black color!
It actually is. Most insects have insectoverdin, which isn’t a single compound but instead a mixture of blue and yellow pigments that simultaneously produce the green colour. Quite literally “bug green”