[Themes?] My Lumia is developer unlocked, is there a way to get custom themes working

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As it says in the title, my Lumia 800 is developer unlocked, so I'm wondering if there's a way to get custom themes working on it.
I downloaded an app called Phone 8 that had a "launcher". Where you can customize the "homescreen" and its tiles.
It also worked in landscape mode and I was wondering if this were possible for the homescreen itself, atleast to some degree. I've seen in the WP7 forum that theres a few custom themes out. And I'd like to do that with the Lumia aswell.

I'd also like to be able to have a background image behind the tiles, and maby do them a bit transparent.

until we get interOP unlock and gain access to the registry we can't make any custom themes/ backgrounds.

A developer unlock can help you make changes to the tiles....custom tiles..