Constant Rotation/Color Change

To add a bit to Richard's comment, any effect in Premiere has settings for both masking it and for keyframing, and of course that always appears in the ECP. You can both set a mask in the ECP to control where the Lumetri effect is applied within a frame, and that includes the ability to feather that mask to spread out the blending of the original and altered images.

Plus, nearly every control of Premiere has keyframes available ... the little stop watch icon to the left of any control is the switch. Blue, and any change you make sets a key-frame point, gray, any change you make changes for the whole clip.

You can even do things like Alt-click/drag a clip to a second track up above. Go to the end of the clip, make the appropriate color correction choices. Now turn off visibility of track 2, and go to the beginning of that clip on track 1, set the color as needed. Now ... figure out where you need to start the 'fade-in' to the correction on track 2, and use Opacity on track 2. Set the track 2 opacity to 0 at the beginning, where you want it to start fading in set a keyframe then go a bit farther and set the opacity higher ... use that technique to control the blending between them until by some point you are up to 100 percent opaity on track 2.

Neil

Have a look at key frames.