Steve McDonald wrote:... but in the color editor you are keyframing one clip at a time which makes this a bit of a bear...
In the node window, you can switch between clip mode and timeline mode, in timeline mode you can add nodes that work across all clips in the timeline. So you could add the OpenFX to a node in timeline mode and keyframe it to affect just the two clips you work on.
Would that be a way for you?
regards, Frank