Campag4life, below is not my pic, but it illustrates what I did. My Zertz are not wrap-around, they are press-fit into openings in the frame. The logo-metal I removed is pressed into the Zerts, using the pins you see in my pic.

You can flick the logos out (with a bit of work) with the tip of a small screwdriver. It turned out to be less work to press out the entire Zertz, remove logo, press Zertz back in. I then filled the space where the logo was with the 3M reflective tape.