NeverarGreat said:

Quick comparison:

1: Blu-ray

2: Blu-ray with predictive colormatching from 16mm source

3: 35mm frame with slight color correction to remove red fading

4: Blu-ray with curves adjustment

While the colormatching algorithm works amazingly well when using identical shots, I'm not sold on its predictive power. In the above example, the predictive shot has crushed and dull highlights, and the blue in the background inexplicably turns to purple.

The model was not calibrated on a representative 35 mm frame, but on a 16 mm frame, so naturally it's not going to be able to predict the colors of a different print, and certainly not one in poor condition. However, if the source and reference quality is good, the predictions are usually very accurate in the same scene, and sometimes across scenes, as was evident from the Star Wars example:

Bluray:

Bluray matched to reference frame:

Bluray:

Bluray matched directly to Tech IB:

Predicted correction using color correction model from the above R2D2 reference frame: