G`MIC was a part of our toolkit for quite some time before Light Dawned Over Marblehead and we noticed it could make animations. Given the broad definition of a G`MIC image, where depth is just another image dimension, and given that -display automagically scrubs through any image with depth (DUH!), we find it hard to understand why it took us so long to board this particular clue train. Shuttered by our preconception, we suppose, that G`MIC works with (just) Images (which we picture as flat). So be it. We're not too bright, but at least we're slow.
And it can make animations pretty quickly. The distortion field (the rainbow stuff in the background) was not too hard to generate — a pipeline of six commands. And the follow-on pipeline to get the title to dance in concert with the distortion was not that much longer. Plenty of time was available for tweaking of parameters and playing around.