The color picker modifies a standard Joomla parameter text field to generate a color picker. It returns a six-digit hexadecimal color code. It decays gracefully - if for any reason the script does not function then the user will see a standard text field. However is has been tested in Internet Explorer 7 and 8, plus Firefox, Google Chrome, Opera and Safari, and should work in any standards compliant browser.
Please note that this is not an extension which you can simply install with the Joomla installer. But if you unzip the archive which you download, you will find that it contains an example content plugin, which can be installed. The archive also contains documentation for using the color picker field.
Version 1.1.0 adds compatibility with Joomla 3.0