The colors are definitely more accurate than the DVD/HDTV, since they were not yet regraded by Lucasfilm. And the HLD-X0 player that I used is famous to render the colors without any artefact. But it remains a NTSC Laserdisc, so colors are never 100% accurate : Never Twice the Same Colors…

IMHO, they are a little bit too greenish. The SD captures (ORF1 and Scandinavian C+) seem to be more accurate than the Laserdisc: for the few scenes that were not regraded on the DVD, colors are 100% similar to the ORF1 SD capture.

Anyway, IIRC, the master used for the LD was taken from an interpositive, so the colors are close to a theatrical experience, but not 100% the same.