Many flower colors are due to the presence of more than one pigment. Our local large camas, /Camassia leichtlinii ssp. suksdorfii/, clearly has a deep blue pigment with lesser amounts of a rather muddy purplish pigment. The combination in the usual flower gives the deep saturated blue-purple characteristic of this subspecies (and also of /Camassia quamash/). Years of scouting around for color variants have yielded a number of white, near-white, sky-blues, and so on. Once, just once, I thought I saw a pink flowered form, but as the sun was low, this may have been due to the reddish evening light. Oddly enough, the type of this species occurs only around Roseburg, Oregon, and is a pale creamy yellow. Luther Burbank at one time was working with /Camassia/. The multi-volume "Harvest of the Years" has a colored illustration of his trial patch, but the color is not photographic, so it's hard to say if he actually had the range of colors depicted. /Cichorium intybus/, a common roadside weed that lines our highways with skyblue in late summer and early fall, seems to have the same combination of pigments, but its blue is much less saturated. A good white flowered form turned up once, I've seen the odd pink once or twice, and I've also seen plants with a deeper blue. At the other end of the spectrum, consider /Tulipa sprengeri/, which has a uniquely glowing red flower. I'm convinced that this is a red pigment plus a yellow pigment, and keep hoping for a yellow-flowered specimen to turn up among the many self-sown seedlings in my garden. So far no luck. -- Rodger Whitlock Victoria, British Columbia, Canada Maritime Zone 8, a cool Mediterranean climate on beautiful Vancouver Island http://maps.google.ca/maps/…