for the dashboard - whats wrong?
cd player - its not supposed to change color?
fog lights - you can just unscrew them, it appears ... yea, the screws are rusted but u should be able to get to them still ... if not, youre gonna have to drill them out, cut them out, or chisel them out
for both Gen 3 & 4, the mudflaps seem to be randomly applied to various cars ... my gen 3 doesnt have them, but i know many do ... there are two gen 4s next door to me, one has them & one doesnt
not sure what the full-body pics are for
yellowing - did you use Meguiar's PlastX? you could try to wet-sand it with an extremely high grit, but that can be messy sometimes .... i know one of mine is so worn & yellowed that its not repairable - but its not worth a new lens to me
rims - strip them down and repaint them .... or get them powder-coated, which is what i would do, especially since its not that expensive around here
idk what the rest of the pictures are for - but clean your engine bay