After 37 years my front lenses are not what they should be. The clear side still looks like new but the amber part is starting to loose its glory. A year ago I ordered a set of $900 new lenses from a US manufacturer but they where a huge disappointment. Did not fit at all and I suspect rest of the stock is the same.... Well,back on with the originals. Can the remaining amber laquer be "washed" off without damaging the plastic ? I have tried to refinish one of them with correct amber spray paint but that sure does not look good enough. I for one think a black 400 looks better with all clear lenses so I would really like a reasonable set of those. But buying new production sets is not an option. What to do ?