Seat comes with the cushion, cowl, and hardware, just pull out your old seat pins and latch, and hook this one up. I had to shim mine a little, but nothing major. It comes in black, and required very little prep before paint. If you wanted to hide some electronics underneath, that seems possible too, but I like to see all the parts of a bike.
The LED light bar is right on my threshold for safety comfort. There is a crummy vid of it a few posts back. Honestly, If I were more unsure, I'd just buy two of the light bars and mount one on top of the other, but that is rather pricey. On a side note, I'm trying to stick some reflective safety stickers on the rear of my helmet in a fancy way, maybe like the "H" of the Honda auto emblems. Has anyone done this?