Yeah, it was the Castro. I believe the LPPs of The Blues Brothers and Close Encounters (20th anniversary) I saw at the Paramount looked kind of yellow-greenish in the whites. I believe that there was also a yellow-green bias to the trailers I saw before Rear Window at the New Beverly in L.A. I also seem to recall a tinge like that to the 70MM LPP of Ghostbusters I saw at the Egyptian. They all had different color timing but whites were always a yellow-green off-white.

So maybe in this age of neutral-temperature digital projection, we've all forgotten how projected LPP looks.