here's the color combo charcoal & black* (* black on: dash, carpet, etc.)
http://www.hamtramck-historical.com/images/dealerships/colorAndTrim/1970/70_Satellite0012.jpg

Barry your first link is "Sport Satellite hardtop" & the second, check out footnote #6 - the third doesn't seem to differentiate

but here
http://www.hamtramck-historical.com/images/dealerships/SalesmansPocketGuides/1970/Pg%20022.jpg
& here (footnote 6)
http://www.hamtramck-historical.com/images/dealerships/DealershipDataBook/1970/70_Belevedere0011.jpg
cover Sport Satellite 4-door sedan

is the "buddy seat" charcoal or black?