Narcissus 'Exotic Mystery'
https://store.brentandbeckysbu...
http://www.gapphotos.com/image...
The colours bleeding into the perianth doesn't actually make the perianth that colour though, it might get a bit confusing (and messy) listing a perianth as green when the base colour is not. Same with the corona, some are orange with a red edge etc. I would think the base colour is the only one which should be given or we get into too many variables. I have Narcissus nobis var. nobilis where the perianth has a lot of yellow on it but I would still class the perianth a white.
Giving a combination of perianth (1st colour) with corona (2nd colour) as they have done on the site I linked to makes life simple for searching colour preferences..
http://www.qualitydaffodils.co...
Wouldn't a list like this cover it all? Gold really could be a yellow or orange, there's shades of all colours.
All white
White with Red or Orange
White with Pink
White with Yellow
All yellow
Yellow with Red or Orange
Yellow with White
Yellow with Pink
Orange with Orange or Red
White or yellow with green
