Q: and how do you create it?
A: probably make a cube, scale it on 1 axis, maybe keyframe it at 2 slightly different sizes (and rotational positions) over time, then if you can't figure out how to keyframe color changes, you could export 2 different renders, one of each color, and then bring it into a regular video editing/compositing program and then stack the 2 clips, make a vertical cut down both, delete the first half of the first clip and the second half of the second clip, then put them on the same track and crossfade them