This wallpaper made by a macro photo of a Hibiscus. I prefer diversity, but i did not wanted to make a series of color variations, so i post processed the photo. The result is a transparent picture. You can set the wallpaper's color by setting the background color. The first picture represent the original color of the flower.
However you can recolorise the wallpaper, and you can also add gradient color to the wallpaper.