I just sanded them lightly, used a brown fine tipped sharpie to fill in the letters and lines, then sanded a little more. I wasn't sure if it was gonna work. I just tried to be extra careful around the letters. One of them was more worn than the other, and it was harder, especially one of the lines to the right side. I just kinda freehanded it. Then I put a couple coats of poly on them. They arent perfect, but they look 100 times better than the nylon handles.
I looked for more info on the Kenmore model and couldnt find anything, even someone saying that weber wouldn't have rebranded a kettle for sears, but they look to be made just like the weber handles, and the wheels and dampers said weber. Idk but I like them.