I have never flown Delta but my grandmother flew Delta Express from MCO to IAD and took a picture of the inside and the seats were blue with grey leather headrests and a grey pattern throughout. As for Eastern, maybe the picture you saw was an old one. In the 70's the coach seats were yellow, pink, and I think blue (but don't quote me on this) and the first class seats were blue with maroon headrest covers. They were colorful. One Eastern L1011 I was on had brown seats with blue, red, and yellow streaks throughout. This was in 1980. After that, every Eastern plane I was ever on had (L1011's, 757, DC-9's) had dark brown seats with orange vertical stripes. Some seats had both orange and tan stripes. The seats with tan seemed to be toward the front of the cabin. The bulkhead on the 757 had the Eastern Falcon logo really big (like the entire size of the bulhead) and it was orange and brown. the L1011's I flew on all had greenish galleys and the walls had a tan design. I think the galleys were never changed from the delivery interior. They would match the delivery interiors perfectly. I was never on a EAL DC-10 or A300 but I think they had the same ornage and brown interiors. In 1990, they started making First Class seats two tone grey leather. I don't know if they started to change coach or not.