interior paint question

[stepside83]

im buliding an 83 chevy stepside, thats going to be some shade of blue on the outside, and i wanted to change how the factory would of painted the inside from doing all metal peices in same color as ext, i wanted to paint all metal peices a gray, and do dash pad black, carpet and headliner black, door panels and seat black and gray, i wanted to paint door jams same as ext color, then everything metal from the door weather stripping in, i wanted to do gray, has anyone done this, or seen done, was wondering how well this would look, thanks for any pics or input