Bought a new Sedan, now I want the 3 door liftback.

[Dec24th]

Ok,
I'm a person that can't decide on anything so quickly.
I bought a 2010 Yaris Sedan just before Thanksgiving 09. Now 7 weeks and 2 days later, I've got a change of heart.
I want to go back to the same Toyota dealership and trade in my 7 week old sedan to a new hitchback. Is this a dumb move? It seems like I am in a good position and good timing to do the trade in now. It has under 1850 miles on it.
I am fully away the car has lost its value the second we drove it off the lot and I will be losing money if I trade it in. But I want to be happy and get the model I really want.

Please anyone, give me your advice.

Each time I see a hitchback it makes me want it more and more and makes me hate my sedan more and more. The 3 door is more my personality and its sleeker and a sedan is not suitable for me right now and in the future (no kids ever!)

ToRn between doors,
Allan