BmB said:

But on the other hand why are you colour correcting at all then? I'd say the "pink" is part of the expresssion of the film as much as the blue tint is of the scene.

Because it never originally had a pink tint. It didn't have a pink tint in the cinemas, it didn't have a pink tint in the broadcast theatrical version but suddenly got a pink tint for the DVD. Colouring problems due to the transfer. And here is the proof

As you can see, the redemption version is a lot closer to the original colouring of TPM. Every single DVD version of the whole saga has colour problems and does not represent the original colouring of the movies.