If you have 1 object with arms and legs or whatever configuration of limbs, you can't ghost the limbs individually. To fake the ghosting of individual limbs, you'd have have each limb you want ghosted to be a separate object. You could make the black colored parts of limbs transparent using SET OBJECT; but that would make all black parts transparent. With careful texturing, you could make those black areas that are supposed to be opaque not quite black and those that are transparent completely black
Static Environment objects lose all of their special object abilities like ghosting and transparency, scaling, positioning... It's basically so they can be rendered quickly without taking as much resources as regular objects. I've never noticed a performance increase, however, when using them so I never do - but I may just be using them incorrectly.
EDIT:
I just posted a code snippet that may be helpful:
ghost limb
Enjoy your day.