The buttons on the cap may be not painted (aluminum color). You can buy a cap with painted buttons cap here Cap 1943 feldgrau "Replika".
M43 made of feldgrau cloth with olive or gray lining (depends on batch). The visor has a soft insert of several layers of fabric, so the cap can be put in your pocket and washed in the washing machine. There are special loops on the inside of the flaps which serve to hold a special cloth acceccory (extra cold protection) or hold ends of the flaps when they are down (in cold season). The buttons of earflaps are under the chin (not under the nose) if you fold them properly and unsing these loops.
There are nice ink stamps inside the dome of the cap: size, year of production (1943) and the manufacturer's number in manufacturers' coding system of the Reich (RB.Nr.).