i have first hand experiance of buying a colour changed car
it was a 2 year old saxo that had been maxpowered it was originally
mango yellow/orange and was colour changed to a correct silver
with dark grey mettalic body kit which was available but rare as most
were plain silver, on a hpi it showed as a colour change and was putting people off.
i bought it from Manheim Car Auctions and could not tell it had been
done until i lifted the floor carpet out and there it was MANGO
the car must of been painted by piccasso as the engine bay boot
inside all the doors were done properly.