animate post processing behaviour

I need to control depth of field and color grading during a cinematic. But I can’t figure out how to keyframe anything in the Post Processing Behaviour.

Please tell me this is possible and, how?

I guess this is along the lines of what I was looking for.

Essentially allows animation of an instance of the PostProcessing Profile within the animation window.

You can create a script with an AnimationCurve that represents the value of the variable you want to animate. Then use the Evaluate() method to return the value of the curve at any arbitrary point in time and assign this to the post processing behaviour.