hardwood flooring question pre/unfinish

I have a job I am supposed to start next week. The customer has a prefinish maple hardwood floor in their kitchen. I am adding into their living/dinning room. My customer does not like the natural look and is leaning towards a rosewood stain. I'd hate to put a prefinish maple floor in the living/dinning room and then sand it. It would be much easier to just put a unfinished maple hardwood in. Since the kitchen is prefinished it has the beveled look. What do you guys normally do in this situation? The new hardwood will not be tied into the old hardwood.