I would definitely find the black color more distracting afterall the rest of the notebook is silver,*the bezel being silver would not be distracting.
----------
But why would you want a black bezel? Your computer is silver.
If you bought a yellow computer and the bezel was pink, then that would be distracting. If you bought a black computer and the bezel was orange, then sure, that could be distracting too, but you can't buy a silver computer and find a silver bezel distracting, no, you can't, at least I really doubt that. Are you distracted too when you look at your screen and you see your touchpad and palm rest and the rest of that silver surface? No.