Instead of keyframes, make a cut. Then add dissolves.
Then what is the fast way to correct white balance? Use the Fast Color Correct on each of those segments, and use eyedropper with each?
I've already created an adjustment layer to use the Secondary Color Correction within Three-Way Color Corrector to minimize the blue cast from sunlight.
A Secondary is not a very good way to deal with a color cast.
Secondaries require one to isolate ("qualify") a region to apply the grade to. eg a red tomato in a bowl of salad leaves.
A color cast on an image is too "overall" to be able to qualify precisely if at all.
I shouldn't have used the word "cast", maybe. There are just a few patches of bluish light on some floors, walls, cabinets, etc. from where window light is reflected. The Secondary did a pretty good job of dealing with those. I'm open to learning a different way to do that, but for now I'd really like to figure out the best way to correct white balance and animate/keyframe it.
thanks for posting.
I ended up going with Jim's suggestion. I created a new adjustment layer, added the fast color corrector, then used the razor tool to split the layer at various points. I used the eyedropper tool in the fast color corrector for each segment, and added a dissolve effect across the layer.