If you really want it to last a while (and a ton of color choices), fill the recessed logo with crayon wax. Scrape a crayon back and forth acros the top til the logo is full, wipe off any excess on the flat, and then hit it with a hair dryer to stick it all together. (We used to do this with skate board wheels back in the day.)
Or, I may be full of crap. It's late, I can't tell.