Yo Rogue, actually that's only ever been the case on the connie refit, on the Reliant in STII and every time the studio model was seen (except the Bozeman) it had both sides blacked out, also it's pretty much accepted that for ships with odd numbers of nacelles or top-bottom nacelle arrangements they are either lit or black on both sides, not half and half. Just saying is all, really black would be better as it's meant to be some kind of armour to protect the inside bits.