1. Brass is missing and has the same body type as the Vic.
2. Greg looks like he has a shiner, or maybe that's just bad lighting. He also has a photo of someone in his jacket pocket.
3. Nick appears to be wearing a ring on his ring finger.
4. Grissom appears to have a smudge on his collar.
5. The slot machine is showing 3 cherries. Maybe someone won big.
6. I don't think that is a badge in the Vic's pocket. It appears to be a hankerchief or rope.