The main source of inspiration for all artists is Mother Nature as she has an unending collection of hues and designs. If you are doubtful about this, then this is the article that you need to check out. In this article, you will see that most of the color palates are a direct result of the shades that you see in the natural world. Be it the color of fruits or the hugs of water droplets on the green leaves or even the moss covered doors. No wonder why artists always turn to nature for their creative inspirations.
More info: design-seeds.com (h/t: boredpanda)