LoneColor

Use the free, tiny and portable LoneColor application to set any solid color you like as your Desktop wallpaper, or let it surprise you with a randomly generated color wallpaper. LoneColor is very easy to use: simply drop the application or its shortcut on your Desktop and double-click it: you will get a random color wallpaper. Rename "LoneColor" to "LoneColor Pink", run it and you will get a Pink wallpaper.