Re: Lazy facts
It seems to me that Apple is approaching the watch launch from a customer-focused perspective.
I'm pretty certain the customer would like to have their watch as soon as possible, and show it off on their wrist as they walk out of the store.
I rather assume that with all the possible options, between the size and band, they cannot provide enough stock to avoid having the light blue and pink models the only left in the store after two hours.
Apple doesn't usually have so many different versions of what they sell, and they are in general very careful about unintended consequences. The resulting atmosphere of unattainability surrounding the watch might well be considered an additional bonus.