I ordered a seat cover for an 06 Black XTX. After checking here I knew that it was an all black seat. The anti slip is the side panels so grip with your thighs.

Based on some Yamaha peculiarity my dealer told me you can't order by the colour of the seat, you order based on the colour and model of the bike that seat comes from.

One of the black bikes had gray side panels to the seat and I wanted to avoid that.