well to be more specific and to correct myself on a major scale, I want to animate - instead of 20 - 1728(!) spheres placed in/as a cube of 12 * 12 sphere objects wide (X,Y) and 12 sphere objects height (Z).
To create patterns in this cube over time I want to change the transparency, color and other texture settings of each individual sphere object.
To address each sphere manually for each frame (± 5 * 25 frame) is a very labour intensively job(!), so I wander if there’s a way to make things working a bit smoother by scripting the texture changes.
Thank you for pointing to the IPO. I just started in Blender (yesterday worked through the Blendercourse PDF) and wasn’t aware yet of the IPO functionality. ;-P.