Chickie'sMomaInNH
Garden Master
this might be a better look at what is meant by a 'blue' hosta. http://www.hostalibrary.org/a/a.html look at the Abiqua Drinking Gourd.
Red I looked up Empress Wu on link chickie posted to hosta library..
Did you find a source for Empress Wu? I would go for one of those, I'd have to move some plants around to accommodate it though.