How to pass multiple objects to hook_view()?
hook_load() gives you the node that was just loaded. The reason it gives you the node is so that you can modify it. So you'd do something like $node->myModule['colors'] = array ( some colors here... ); Read up on the API documentation.

See also the API docs for hook_view().

If you move on to Drupal 7, you can do all this stuff as fields. :-)