My oldest ones (about a decade, same as you) are a touch more yellow than the ones I bought last year. I still think that, kept away from UV, they'll probably outlast me.
Same. I have one that’s about 15 years old, lived in a cupboard its whole life, and it’s slightly yellowed but still going strong.
Same. I have one that’s about 15 years old, lived in a cupboard its whole life, and it’s slightly yellowed but still going strong.