a bit too unstructured
^^
Do the ones on the first green-and-red screen have a purpose also, or are they just decoration?
Just decoration.
small tip
not especially i think, because it allow to be able to look another way differents pieces of building. There are just a change of color, i see it as that. I think pieces are more distinct again, as whatever point of view(caméra), it stay the same(color).

I am going to do a parc on one thčme, so as to target more easily different aspects without going too away.