Well, when my '09 was new I found the seat hard, and I was sliding forward all the time, so I bungied a soft lambskin pillow to the sitting area, did that for about 2 years. Now that the scooter is 3 years old it seems the seat has softened up a bit so I now ride it without the cushion.
I plan to get ahold of some camoflouge material and cover the seat to give it a different look. I see on Ebay there are a few dealers in England that sell covers for our seats in a few different colors, but I plan to DIY it.
That picture of the purple seat looks great.
Sponge