Ohhh, I love Numb3rs!
I have noticed especially for Iris, that when I purchase a blue one, at my houe it looks purple-y. But when I take a photo of it, it looks blue. The same goes for reds - they look more purple red - but look like a true red in a photo. I notice this more with iris than daylilies. But I too notice the color variations from my eye to camera, and also the different times of the day.
I am grateful for any information. That said, when I see a daylily with a lot of color variations, I think to myself "this could be any of these colors" and also use that as a basis for the purchase whether I want it anyways, or decide not to buy it yet until I get more information.
I love the fact that we can all post photos of flowers/ plants here - as far as I know, there is no limit to how many pictures a particular plant in the database can have. As has been said "I need more data" - whether that is by sheer numbers of photos posted, or the photographer is able to include more information - it all helps me. ~Jan