Black panels on the duetto

Can I replace mine as they are dull and out of shape

Like Hens' teeth. Whatever you do don't throw them, paint them, use bumper black or whatever to restore them, you simply can't get them.

I think you may find they are unattainable now, I may be wrong , think it was been mentioned in another thread, you can bring back the shine with linseed oil, but the out of shape I cannot help you with, have they come adrift from the vehicle? if so probably can be fixed, I did mine with Sikaflex sp black, it is very messy stuff but works on those panels.

Good luck,
Best regards,
Margaret

Thanks fo your suggestions,,,,good luck