Well, you should be able to see 30 things in the queue without even having to scroll down, so I've no idea what the need is for coloring stuff first *then* moving em. The easiest thing of course would be to move stuff in the queue as you add them. But why would you want to dl them by category? This is a real question: I'm interested in why this is important. There are some open requests still for queue categories (i.e. with different profiles for dl & unrar dirs, etc). But you can add stuff you want sooner with 'Add as first' options, or filter all then move to top, etc.
I'm just not seeing a use-case here that would apply to more users than just you. But as I said above, everyone has their own way of doing things. So the more users who pipe up in this thread if they want/need such a feature and explain why, the better.