Well done powers, you beat me to it. Chef, take a peep anyhow at the original, slight tint then darker tint.
Top lens is untouched as per your 2/3 tint idea. I've also left the reverse light lens untouched as it will then match the top clear brake lens.
Where do I send the bill ??
Make sure you come back with pics when all done, be nice to do a comparison.