I bought the flat pedal with the black rubber backing and not the one with the raised bumpers.
I could glue it on and the entire pedal stayed uniform. (all black dots)
If I bought the raised bumper one I would have to use my stock (gray) fasteners. Then the top and bottom circles where the fasteners were would not match the other black circles. Didn't look right to me.
I would like the idea of the raised bumper model if it had bumpers on the top and bottom. But you can't glue it down like you can the flat one anyway. You have to completely remove the stock dead pedal.
I like the way mine looks.
I also notice that the bumpers on my stock gas pedal are already showing signs of wear after only 6 months. Oh well.