Switch iPhone 5 From White to Black?

I reserved a white iPhone 5 from Fido, and it's been two and a half weeks since I placed the reservation. Within those weeks I've basically talked myself out of wanting a white iPhone and now I want the black one! I'm not sure if they can swap it for the black one or not, but I'm still 2000 in line… Should I place a new order or what? I feel like its going to take forever both ways so I should place an order with the colour I want!

You can probably swap it out

Of course, switch freely.