There's no control to dim the lights but the solution is simple. Visit a home or auto tint business and do a little dumpster diving. A tiny scrap of tint is all you need. Apply it to the front of the router and you're good to go. Need it darker? Apply a second layer or use a different level of tint.
If there's not a window tint business near you, the plastic film is available in strips at most any auto supply store.
Cheers
