Apologies - I mistakenly referred to the Forest Edge map earlier. As you correctly noted, the ColorEdge map currently appears to be incompatible with the Corona renderer. I'll check it with our development team, but to be honest, I'm not sure whether this is something that can be implemented on our end, if it would require support from the Corona renderer team, or if it might need collaboration from both sides. That said, I should mention that we haven’t updated ColorEdge in quite some time, and unfortunately, we currently lack the resources to work on our free plug-ins. Thank you for your understanding.
Best regards,