If I look at used prices for Systainers you might just consider selling them.
I have a few classic ones that are yellowed a bit too. I think it's mostly the sun-exposed ones or the ones closest to the TL lighting. By now there is more external shading, the place of the Systainer sit has changed and the TL lights were changed to LED.
But how fast yours have shifted color there must be something else going on. Chemistry wasn't my strong side, but what I read all reads rather plausible.
I have a few classic ones that are yellowed a bit too. I think it's mostly the sun-exposed ones or the ones closest to the TL lighting. By now there is more external shading, the place of the Systainer sit has changed and the TL lights were changed to LED.
But how fast yours have shifted color there must be something else going on. Chemistry wasn't my strong side, but what I read all reads rather plausible.
