Just making a post so you guys know that the project isn't dead :) I just havn't had enough free time yet to finish it. But I'm 1h40 through now so at least I'm making progress.

Here's a sample of some matte color missmatch correction http://pho.to/9EPOg (work in progress). I'm having some problem with the workflow for that since AE dont have any build in scopes which makes CC a bit of a struggle, so I have to use the scopes in premiere which makes it a bit of a headache since I have to go back and forth.

I have also noticed that the color balance in the gout is actually pretty accurate throughout the film, to bad that it has contrast issues and desaturated colors, but it works pretty good as a base reference. But ofc all the matte balance issues is still there (black level issues and different white balance).