The 2007 remix of Help! also has new, distracting sound effects in a few places. There’s a shot of a guy firing off a rifle early in the film, and the original sound effect is appropriately loud and threatening. In the remix, it’s replaced by a quieter, wimpier noise.
It was a real misstep not to have included the original mono track of Help! on that 2007 remaster.
I can confirm that Filmography 2 bootleg DVD contains the mono soundtrack print.
https://www.discogs.com/release/14472421-The-Beatles-Filmography-2
The video quality is terrible. It’s an off-air VHS recording from AMC in the 1990s compressed to single layer DVD-R MPEG2. If you can be bothered, you’d rip the soundtrack and sync it with the Blu-Ray video.
Without watching the recent Blu-Ray, I can’t comment on the colour timings and whether or not they need to be adjusted. There’s and old thread on the Steve Hoffman Music Forums about the LD and MPI DVD with a side-by-side comparison of the two.
https://forums.stevehoffman.tv/threads/beatles-help-laser-disc-better-than-dvd.45432/
MPI DVD on the left and Criterion LD on the right
Both those releases feature the 1987 stereo soundtrack.