I know this thread is a couple months old, but I figured this was worth sharing. I think the OP was looking for an oem style switch with matching font so it looks oem. I spent months searching for the carling covers that match. I found that buses use the same cover and font. The only cover I found that may be useful to someone is a "Lights" cover. I used it for my dome lights. Here is the link to the cover...
BE010650 INTERIOR LIGHT SWITCH ROCKER
Also, to get the correct on/off switch to go with the cover, I ordered a sport switch from an older Commander. The older ones don't have the green led since the older switches don't say "Eco" on the bottom.