Dorozhand
Banned
Well that's certainly a feasible chemical process (and especially since an oxygen depleted atmosphere is going to play merry hell with the free energy calculations so the entropic balance will be different from earth).
Hmm. So assuming an atmosphere like ours but with oxygen replaced with Fluorine, we'd be looking at, predominately blue and purple plants I think?
Mostly purple, some leaning towards magenta. Blue plants wouldn't be advantageous as the blue light of the star would reflect off of them. That would be like having yellow plants on earth.