Looks like its white paint and should buff right out.
It looks like you just need a mirror cap from the picture.
I would replace them with the OEM CF ones.
Best price I found on ebay
or you could buy these and repaint them
12 X5 3.5i TiAg Cinnamon, Bamboo, Convenience Package, Sirus, Running Boards, Spare, BMW Apps MODS OEM M 333 20" Wheels W/ Extention Arches, Perform Grilles, Painted Reflectors, Xenon Fogs, 3M Bra, Side/Rear Window Shades, Black X5 Emblem, Black OEM Frame 12 F30 328i Sport Line Glacier Silver Black w/ Red Stitching, Xenons, Prem package, sirus, heated seats MODS 3M Bra( w/ Rockers), Side/Rear Window Shades, Perform Grilles & Rear Spoiler, Painted Reflectors, Red Line mats, Black OEM Frame, Xenon Fogs