The Little Mermaid had the priest’s knee, Aladdin had some minor tweaks to some of the CG, and I think some of the earlier movies had some paint or some cuts?
Also some bits of paint clean-up and such at the least starting in 1997. Possibly more. In 1997 they scanned it all into computers, every frame, and then touched up paint crawl and dirt. Did the colors also get changed during that process? Maybe, not sure.
Each home release has somewhat different colors. 1989/1990 and 1997/1998 trailers seem to have a bit different colors for what that is worth.