colortypist

Colortypist is a Windows program that can turn the background in any color you want, depending on the color code you specify.

You can type or paste the name or HTML code of any web color, and see it fill your entire screen, in real-time, while you type. You can copy and reuse HTML colors in external apps, for various purposes; generate and save images of any size; save any color in a tiny HTML file, and more.