Color options for vinyl board products?

The goal is to avoid painting the exterior of our new home! We are looking for strategies to install vertical siding under a second story deck (where a lattice might go) that does not need to be painted (and repainted). We’ve considered ripping Trex planks down to a narrower dimension, but the cut edge will need to be finished, etc. The bigger desire is to find a way to either apply an epoxy finish to vinyl products, such as Azek, or simply purchase products that come in a variety of color options. New vinyl building products are appearing in the market all the time. What innovations or ideas do people have?
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If you find an Azek color you like, be assured that it is unlikely to fade. The decking they make from my experience (6 different decks and colors) simply does not fade. In one case I had to replace some boards a painter had spilled paint on and after the new planks were in you couldn't tell the new from the old.