I was at the store today & was surprised to see purple & blue live poinsettia plants.  Granted, I thought that it was spelled pointsettas until a few days ago, so I really shouldn't have been surprised that I didn't know everything there is to know about poinsettias.  I am fairly sure that the glitter poinsettias by the 
xbox 360 display weren't natural. I went over to wikipedia & picked up the following facts:
- There are 109 varieties of poinsettia. I'm pretty sure that glitter is not one of these varieties. 
- In Cuilaxochitl the name for poinsettia means star flower.
- There's an urban legend that a two year old died after eating a poinsettia in 1919.  From there, the rumor spread that this plant is toxic.  The plant isn't that toxic, but can cause vomiting so it's still a good idea to avoid eating these.