The Fluo kits look great, but mine (Fluo Red) faded to almost white in about 18 months with about 6-10 hours per week of outdoor use. This is not covered by warranty so I would avoid. Surprised to see a quality sun wear brand like Rudy Project making products that don't do well in the sun!
When I enquired I was told that this is a known problem, but I don't see it mentioned ahead of purchase on e-commerce sites like this one.
Fun way to change up your look
Bought these spare parts so I could further customize my sunglasses to have the bridge color I wanted. Parts work just as well as the original and were easy to swap out.