This post is about replacing a hatch button badge that looks worn, but the button works fine. It seems to be a common issue for the model brought on by the way they are attached; I explain below. You pry the aluminum logo off the button with a knife - start with stabbing it near the edge toward the center. The logo badge is attached to the plastic button underneath with an adhesive. It is a 3 millimeter thick layer of soft adhesive that is only present in the center of the button. The adhesive not covering the whole button is most likely the reason for the wear, as the damage happens near the edges where there is no adhesive to support button pressing.
I attached a replacement badge using silicone just because I had some and it seems to have a similar consistency to the original adhesive and would be similarly easy to detach should I ever need to. I tried to distribute the silicone on the whole button, not just the middle, to prevent deformation on pressing. Silicone seems to hold it fine, haven't lost it yet.
As to the logo badge, you needed a 75mm wide one, the first one I bought, a 74mm one, did not fit. The badge is the same for the front and back.