I am considering using Epoxy Coating Resin to coat some exterior woodwork (marine ply fascias) in the expectation that it will have a very long life (20+ years) especially when compared to traditional paint finishes.

1. I want it black.  Can I use gel-coat pigment (which I have) or do I need to use epoxy-specific pigment?
2. I understand that epoxy is not UV stable.  Does that mean that the epoxy can fail under natural light or simply that it does not retain its clear colour (which is of no consequence to me as I want to pigment it in black)?

Many thanks.