The first cover pictured up there would probably be doable by first hand layup and then followed by vacuum pressing a layer of thin fine twill weave carbon fiber (expensive) and laminating epoxy on to it, the second one would be more difficult with the letters an all that.
I would also be possible to produce it entirely in carbon fiber by making a mold, but that would be a complicated, time consuming and expensive project as well, perhaps especially because of the chain adjustment mechanics on the inside.