I’m more curious what the point is than the sketchy payment plan.
Mulan was created on a digital system and digital releases are directly transferred from that. A transfer from film adds more copying steps between the source and the final release.
This is a case where film prints would have the WRONG color if it differs from the existing home releases and quality can only be worse.
Not to say that it’s not beyond Disney to have messed with the colors after the fact, but you could still color correct because there are enough existing sources to match it to.