question

hi,
i have a question.
is the underbody and chassis of the car suppose to be the same color of the body color?

thank you

not usually. but it is sometimes done.

For what car?

It depends on the car.
Most unibody construction vehicles have the underbody painted when the rest is painted so it is the same color as the top surfaces. A lot of the time an underbody coating is applied though which is either gray or black so you don't see the color coat underneath.

so majority of all car's underbody and chasis is either black or gray?

thank you

Yes.

so majority of all car's underbody and chasis is either black or gray?

Not really the right question. You should look at the particular car you are building to find what is correct for that type. Another car could be different regardless of how the percentages for all cars pan out.