The car is very nice, but there are mistakes. Indeed, seats are not 1958, they were indeed introduced for the 1959 model. It runs on 15-inch rims with 1959 hubcaps, and the window switches and power door locks switches are not period correct (looks like they are 1956 or something like this). And it's missing a few parts, like the chrome piece that joins the left and right mouldings below the trunk lock, in addition to the rubber "shield" (not sure how to call it) that is below the rear bumper and runs from left to right. Regarding the color, can't say, one would need to see its dataplate. The leather pattern seems correct.