The upholstery is Designo Ultramarine Two-Tone. Interestingly, unless the datacard is wrong the car came out of the factory in Tanzanite, not silver, so it must have had a complete bare-metal respray (about 2012-2013 judging from the MoT history). ISTR that MB did some of those under warranty on Schrempp-era cars.
If it were still Tanzanite, I'd definitely not want it with that interior, but somehow, it's passable in a silver car.
It does indeed have the (AMG-ish) Styling Package - chrome grille slats, door handles and tailgate trim, bumpers, sills, wheel arches, white-faced AMG-logo'd clocks, visible AMG-logo'd chrome tailpipe, and an AMG badge on the tailgate; sadly, however, they forgot to fit the AMG engine... A forerunner of the 'AMG Line', perhaps?
Yes, I bought it; it needs a little titivating, but at that price, I couldn't find a good enough reason not to. Nice to drive; just like the ML320, but on steroids when the loud pedal is pressed...