In the summer months here in Bakersfield almost all of my daylily blooms left unprotected are quite faded by direct sunlight. I grow most of them in pots, however, and manage to get quite a lot of them (especially newer daylilies) out of direct sunlight. This bloom on GREEK ART was outside in the heat right up until it bloomed; hence the pastel shades. It normally is a lot darker. But I do think the pastel version is very nice too, which is why I posted it -- I could really see the blue tones.
In my climate (summers mostly over 100 and totally dry) I try to avoid most darker colored daylilies because of this, as the color seems to bleed right out of them before noon. I also set up beach umbrellas by July just to keep the foliage from burning, although this year mine have been up for over two weeks now since we've already had two heat waves.