Thanks! Building a color matching model takes quite a long time. About 10 min on my Intel Core i5 laptop. So, if you want to match each frame to a reference, it would take forever. However, if you use 1 reference, and correct between 20-50 frames with this model, it takes 10 min to make the model, and then 5-20 sec for correcting each frame, depending on the resolution. It's about 10 sec for a 1080p frame. On the 3.5GHz 4 core it will probably be a lot faster, especially if you can use parallel computing.