I was under the assumption since i have read this info from more than one place that 1985 was the first year for a color matched hard top, and '84 and prior came factory white. Well i decided to take off and preserve my parts ID label since it's in such good shape and i just happened to notice RPO Z59, which is a Black Hardtop. My truck being an '84 model, i thought it had came with a white hardtop and someone had just painted it black to match seeing how the inside of the h/t is white and so is the headliner and pillar covers. RPO numbers say otherwise though. I made sure the VIN's matched just to make sure that the inner fender wasn't replaced with one from a boneyard. Kinda mind boggling. I also happen to notice an odd RPO code i've never heard of before, a YH4...which is described as "Sequoia Special". I can't find any information on this at all, and im really clueless as to what that option would include.