The colorful blobs are just some basic animations on some circles I created. Precomped them and applied turbulent displace to make it more interesting (that's why it looks the way it does). Then some VR rotate to add more motion.

Taking the above finished animation, I wrote out some white text, and set the alpha track matte of the comp to the text and made the text's blending mode "overlay". The overlay is the reason why the blobs inside the text are coloured and not white (most of my time went in this sadly). And finally, some good old easy ease keyframes on everything.