I used threaded metal pipes to support the deck when folded down. Just some cheap pipe I got at the local hardware store. They also have nice plastic threaded pipe in several colors that would work just as well. I could have gotten away with just one support but decided on 2. I use a plastic threaded cap to cover the 2 holes when I am not using the deck. I will show photos of what I mean.
I got the seats from a company called greatlakesskipper.com. They buy a lot of overstock from the actual manufactures so you can buy brand new OEM stuff at pretty decent prices. These seats were out of some kind of Tracker boat. You can buy the basic version of these seats at Bass Pro Shops just not as nice.
As far as the color of the carpet that was the stuff that came when we bought it new at BPS in Gurnee. Not sure if they had a different option at the time.
This mod is very easy, believe me if I can do it, anyone can.