color chooser (color palette) showing all colors

Question

i would like to have an image like this one on my form.

http://www.asptemplate.net/colorpalettegenerator/screenshot1.jpg

depending on where the user clicks, i would like the background of the form to turn this color

Answer 1

There are a few ColorPicker's on codeproject. One example

Answer 2

An MSDN magazine article went into it in detail.