Mats were black. I have my original mats put away. They were never used since new, so I boxed them up and would have to dig them out. Someone else may have a pic.
Mine came with RPO code B32 and B33. Which, from what I have read, is front and rear vinyl floor mats.
They are just plane black vinyl with only "GM" on them.
I think RPO code B34 and B35 are carpeted floor mats.
Mine are very similar, but not exact. The shape is def the same. That is def the passenger side. Mine are plain black carpeted. My car was bought by my friend and only had 15,000 miles on it when I got it.