Mega Drop-down in Drupal, is it doable in Seven?

I love the look and feel of mega drop-down menus , but the Drupal menu system does not have an interface that facilitates grouping of links within menus, and it's even more difficult to throw HMTL into the menu that isn't part of the list of links. I would love to be able to have a primary menu...

Forcing a theme onto the theme settings form

Ok admittedly most developers will never have to use this trick, but if you ever use color module, or any advanced customization through the theme settings API you will want to do some theming on the theme settings page! My premium drupal themes in fact do a lot of things with the theme settings...