Leave the radio button on background to see what the color looks like as you use the color wheel.
The other radio buttons such as text and links are more designed for webpage layout work.
We are using the tool as a way to distinguish colors when communicating on the web.

To change the brightness of the color wheel, drag the slider under the color wheel to the desired brightness.

Click your mouse in the color wheel and move it to select a color and apply it to the Sample Document.

The Sample Document shows what a color looks like. The number of the color for reference is in the background box.

Accolades go out to Brian Hall, a computer programmer that has created Colorserve.
This tool will help you communicate with other artists on message boards and chatrooms..regarding specific colors you are working with or trying to achieve!