What do i do???. Review on Kinetic Nova 135

I went to get the nova 135 from a dealer from siliguri west bengal(financed), they had only a red colored piece (only one piece in the entire siliguri) but I wanted a black one. The dealer promised to get a black one within a day. on the day of delivery I was in a dilema as the dealer had changed the body cover of the previous red scooter. ...........i did not buy that piece........and am waiting for a fresh black factory made piece... did I do the right thing???? or was I about to be taken for a ride???? my doubt is that if they can change the body cover why can't they change the parts inside??? how can I be sure that i'm getting the original piece. how can I be sure that the machine that i'm getting is not the second hand machine in a brand new cover???? this may seem childish but it is worrying me after the episode. I do not blame the manufacturers but who checks on the dealers experimentation.