WHAT THE??!!
It's just a goofy little feature on my camera Jess. I can choose a color and the camera will take a black and white picture with only that one specific color appearing in the photo. It's pretty easy to do.
I can also choose two colors and swap them. For example, if I took a picture of my dog Cody standing next to some blue flowers, I can choose the blue color from the flowers and the gold color from his fur and swap them, turning Cody blue and the flowers gold!
I really don't know how practical those features are, but they can be fun to play around with!