Blue Phal?

[Roberta]

If you have a chance to actually see one of these, look toward the base of the flower spike, and you can find the injection site. The dye is injected into the spike, so it doesn't get into the plant. I am sure that it's pretty easy to find dyes that aren't toxic to the flowers - as a kid, I played with taking a white carnation, splitting the stem at the base, putting one side in a container with water containing red food color and the other side in a container with the water with blue food color. And ending up with a flower that was half red and half blue. Same concept. Try it...have fun.