hi, m8 bodies are black chrome & silver chrome,the black m8.2 are black paint with a brass top plate and bottom cover, the main other difference is (4000th.m8.2) top shutter speed instead of (8000th.m8) sapphire rear glass,quieter shutter, but upgrades are available for the m8, change the rear screen,upgrade the shutter(from 8000th to 4000th) and even the covering to look like the m8.2.(from sandpaper like finish to a traditional pebble like finish) but the top and bottom plates will still be black chrome instead of paint, also the hotshoe of the m8.2 should read 8.2 of memory serves me right i hope this helps a little
m9 black paint over brass plates.