My interior is all black. It is actually in good shape, but it is obviously not what it used to be. I do not want to use a product that will just leave a greasy shine. I am looking for something that will clean & rejuvinate an old interior as well as leave it with a rich finish, without the blinding, greasy look characteristic. I have seen these interior trim refinishing sprays in Summit and Eastwood catalogs, and want to know how effective they are. The only pieces that need it are the trim pieces on the rear deck. I am not opposed to refinishing the rest of the interior to return it to it's former glory, but would prefer not to at this time. What do you guys suggesst?