I want to have a triangle background pattern animate in a similar fashion to what is found at the link below - it kind of shimmers. Although I'd want to have more control like speed, color etc. I have my triangle background in Illustrator and Photoshop. Many thanks.
That's just some sort of Fractal Noise driving the colorization of the individual triangles. In AE one could do it with the Plexus plug-in or create some expressions. You can forget your AI/ PS stuff completely. For it to be animatable it will need to be build procedurally from scratch.