There was a digital reconstruction using the pigments analysis https://blog.world-mysteries.com/science/digital-restoration...

My memories of the few times I've been to the Louvre are exactly the same as yours.

Musee d'Orsay down the river is a much better museum in my opinion and the one I never skip when I'm in Paris, the Louvre I'll only go to if someone I'm with has never been and really wants to.