I've never seen a list of viviparous lilies. Doesn't mean there isn't one, I've just never seen one. The lily you're calling "red ruby" - I think you mean N. Ruby. N. Ruby is a hot pink viviparous lily. There is a huge problem with lilies being called by the wrong name, then the lily is past along with a incorrect name. I don't think N. Ruby would be considered a "purple" either. It definetly is pink. N. Queen of Siam is another pink vivip. N. Star of Siam is not a vivip. Other blue vivip are N. Dauben, N. Edward Uber. A couple of purple vivips would be N. Lavender Lace, and I'd think that N. Islamorada would be considered a purple.
Tammie