(You might already be aware of this, but it's relevant to the post and others might be curious.) I'm sure that more effort than this was put into the color mat

(You might already be aware of this, but it's relevant to the post and others might be curious.) I'm sure that more effort than this was put into the color matching, but the Photoshop color match function allows for statistical sampling of an image/layer and applies those values to an existing image. It can produce the same results and is one of the hidden gems of Photoshop that few users take advantage of. Not a filter, it's one of the adjustments.