Color correction on many (many!) pictures easy

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At school we’re making a stop motion movie, but when we put the pictures together we noticed that some pictures are a bit more yellow-ish than others. Instead of changing thousands of pictures manually, one by one, I was wondering if there’s any way to set certain values and change the pictures accordingly. I can’t really explain what it is I wanna do, but I hope you understand. The pictures is taken with the camera being completely still, so light and everything is the same on all the pictures…