…in this case, adaptability is in how the lights are mixed, what profiles are used etc…and yes, this should be possible and is practicable according to this setup and the respective procedures that you also read about here: Let's see your DSLR film scanning setup! - #293 by seklerek.
My point is - and the flipped tone curve was meant as a somewhat rough hint - that without adapting, the results will be all over the place. Today, most things are implemented in software because it is easy to correct while older systems had tactile controls, e.g. for colour balance in a scanner. Nevertheless, not all parameters can be changed easily. Changing the power of R, G and B lights is easy (change the distance between the lights and the diffusor), changing contrast (overall or per channel) is more difficult though and requires some electrical/electronic gear.
We can see that we need to adapt the parameters of a conversion, and we can also see that several ways to do so can be used. Doing things in software (NLP in our case) is state of the art, but of course, taking action as @seklerek is a cool remix of possibilities…and if we could flip the tone curve in camera, his approach would be really neat indeed!