^^ Looks like the ugly old PAL release. Here's how the '98 NTSC DVD 2004 Drive-In Double Feature DVD looks like in that shot:

Quite cold color timing. A little tighter framing on the epilogue in the '04 DVD:

Spaced Ranger said:

I was thinking about that. If the blue tint was removed (using "Manual Color Correction" of a paint program to set the off-kilter RGB value of the B&W portraits back to it's R=G=B value, applied to the entire image), what would be revealed? Well, what do you know? Really close to my previous "quick & dirty" color correction.

msycamore said:

Nice catch Spaced Ranger! The always satisfied Lucas...

Thanks, but only because I remembered that jingle from Brazil:
Lucas Films! You do the buy, we do revising!

;) Nice demonstration, not that I doubted it but it also clearly show us that the sepia in the portraits was removed deliberately.

Edit: On the other hand, it could be the result of a re-composite, altered nevertheless.