Good thinking, kacir I work marketing for an architect firm (brochures, website, portfolios, etc..) and i've had some hard time learning about CMYK, vs RGB. Throwing this Pantone 13-pigments into the mix, I'm just glad I'm not the one in charge.
Also, if it comes down to the finish of the unit, I would like to request a flat matte finish. For one, I can't conceive of a earthtone slate blue in any kind of gloss. It goes against the very nature of earthtone.
Perhaps you can have a series of earthtones, and market them in some way to denote their colours.. Slate blue, brick red, burnt orange, deep brown, charcoal gray, beige-yellow, hunter green. Sort of like if Ipod wanted to, they could do a Skittles series. That's what their bright vibrant colours remind me of. Every colour of Skittles.
Plus, COOLer has vibrant colours, Sony has vibrant colours, Kindle has.. white. This would be a way to set yourself apart from everyone else. Otherwise, regardless of the inner workings, your reader might get lost in the crowd.