The process of putting on after effects and doing color correction is very much about doing adjustment layer by layer.
Colour correction were done for each scene individually with images of the very first scene as colour precedent.
And all the scenes are put together as a Composition with Compositions. Effects such as blur and noise are added on scenes that are involved. And another layer of effect(such as grain) and general colour correction are applied on top of this “big Composition”.
Solid shape + Mask