For add color picker. you have to add below script on yout tca file.
‘config’ => array ( ‘type’ => ‘input’, ‘size’ => 10, ‘wizards’ => array( ‘_PADDING’ => 2, ‘color’ => array( ‘title’ => ‘Color:’, ‘type’ => ‘colorbox’, ‘dim’ => ’16×12', ‘tableStyle’ => ‘border:solid 1px black;’, ‘script’ => ‘wizard_colorpicker.php’, ‘JSopenParams’ => ‘height=300,width=250,status=0,menubar=0,scrollbars=1', ), ), )
If you have any queries, please do not hesitate to contact me at Jainish Senjaliya