Everyone has their own ideas and there's no right or wrong. I posted a photo a while back, I'd taken just before sunset and there was a lovely hue to the light. Of course someone decided I had a bad colour cast or poor scanning and managed to PP it to make it appear as though it was taken at 12 noon. Quite impressive but so very wrong
A separate catagory would be confusing IMO. I think its better to post in the appropriate photo forum for the subject and invite comments or interpretations.