I would be interested, as well. I did try to have some made and found that extruders just were not interested, even when I offered to pay for tooling and agreed to take the huge minimum amount - some 1,000 metres. I also tried another avenue that I thought would be better - a polished aluminium-coloured vinyl. This would not corrode, as the original aluminium piece did, and would be much easier to fit. In the end, I gave up and used the rubber one from Cicognani. My plan is to try painting it, using aluminium- coloured paint. I expect this would eventually wear off or require renewing.
Peter Blenk