The Drupal 6 branch of Jquery Colorpicker offers a form element than can be included in any form in this way:
$form['element'] = array( '#type' => 'colorpicker', '#title' => t('Color'), '#default_value' => 'FFFFFF', );
This module includes CCK integration on his 2.x branch. A colorpicker field can be added to any content type with the JQuery Colorpicker widget
- Install the module as you would any other Drupal module
- Go to www.eyecon.ro/colorpicker/ and download colorpicker.zip.
- Extract the the zip file content to the module folder or to the
colorpickerfolder in your libraries folder.
- If you have extracted the contents right, the following filepath should exist: [path to module or libraries folder]/colorpicker/js/colorpicker.js