heater control illumination assembly

The plastic cover for my climate control (part number 79550-SK7-A01, not available) looks kind of crummy, and I can’t seem to get it looking good (Mother’s plastic polish didn’t do anything on it). Any advice on how I can make it look “like new”? Alternatively, if anyone has one in excellent condition to sell, I might be interested.

you can try some fine sandpaper, then the polish. maybe 1000 grit