update color_validate($info)

Great work!

Just wanted to mention that color_validate() needs an update on references and logic.

If I had the time to write up the patch, I would, but for now I'll try to list my findings and if you haven't had time to fix it by the time I have, I'll get on it. But please correct me if I'm wrong since this post will be my future reference.

color_validate in color.misc.inc is still looking for:

$info['engine'] (is now reference methods)

$info['schemes'] (is now premade schemes)

$info['image'] (is now images, also found references to img in response messages)

$info['css'] (is now stylesheets)

$info['image']['gradient']
(is now fill and type of fill is passed as first parameter in array - currently supporting 'solid' and 'y-gradient')

Validation of fill needs total make-over.

Also all corresponding drupal_set_message responses need an update.

The following line confuses me:
$theme = $info['theme'];

Is this supposed to be set in color.inc or is this added somewhere by the module? Because the current logic heavily depends on it.