Set your wallpaper to a single shade with LoneColor. ... LoneColor also allows you to specify the shade you'd like to use. On Android this is as easy as visiting a site like HTML Color Codes, copying a color code and tapping the app icon.
about LoneColor
One of the most simplistic and cleverly designed apps we've seen in a long time.
Softpedia ★★★★★about LoneColorSoftpedia Editor's Review: Excellent
Color me green, Color me red, Color me good - LoneColor me for sure! ... This tiny weeny app serves just one purpose in many colors. ... It is really tiny and for free and is fun and pretty. You don't need to look for excuses now. Go install it.
about LoneColor