Jrlander: here's some info on the interiors.
The 70s ones were done up just like the DL L-1011s originally were. In F class this means the cloth seats with brownish/red and salt&pepper colours (I think anet has some pics of the L10 like this). The coach cabin had the yellow, orange and blue covers which were common to the DL Tristar as well, and it was in a 2-4-2 config which was typical for the DC-10 and L10 until the late 70s. The seats were basically the same ones as DL chose for the L-1011 (not United-style seats) but the DC-10 had some differences, for example the oxygen masks in seatback compartments and the little twiddly air vents mounted in the seatback in front of you, etc. At an airliner trade show I bought a couple of black and white pics that I'm told were taken by DL, maybe if you wrote to ATL they would send you one. I also saw some pics taken by a guy who flew on one, that's why I know the colours. BTW, DL installed those coat compartments between the two middle seats in coach that were really a Tristar feature (EA and DL had them). As far as I know this was the only time they were put on a DC-10.
The 80s cabin was basically ex-Western, with blue leather in F and coach cloth in grey or blue with little red and white doodads on them. I'm told that this was the cabin WA adopted when they went to the silver scheme 'Bud Lite'. (Before that I hear the cabins were psychedelic orange and red, no thanks).