I’ve used AI in the past to try and add colour to usually wooden statues which have limited evidence of their past polychrome look. It often makes it look colourful and that is in keeping with what I’ve seen in wider imagery.
This screen in the museum shows the evolution of how the figures in their collection were painted. This shows a much more pure and white look back in the medieval period towards more colour recently, although goodness knows what happened between 1893 and 1895.