If I was getting it for me, it would be a 3LT Z51 in Velocity Yellow w/black rims, Laguna Blue w/chrome rims or Arctic White w/black rims. I have got to have heated seats, I'm spoiled.
I think the wife is going to go with Arctic White or Velocity Yellow. It will be towards the end of the first production year before anyone offers GMS on them so I have plenty of time to drool.