Basically sitting at 5 to one in favour of colour so far. Personally when the coloured body thing started I think it definitely brought users to the brand as no-one else offered them. In fact it seems to have brought enough that canon has started offering a few (not as nice but that's Canon
)
I think for the asian market where the build your own colour combo is viable it's a great idea and it shows in pentax japan sales numbers
I think they should open up the option to people who are willing to wait for something unique at a premium myself. more profit for Pentax, and will draw pople everywhere to the brand
I think moving the feature into the high end would be a mistake though. enthusiast buyers in general are a pretty cantankerous traditional bunch