This water bottle is a puzzler. I thought for just a moment that this might be a Wisteria water bottle (blue on the top and purple on the bottom.) Judging by the spouts, I thought that it might be older but while there is no etching on the bottom, there is also no wear. (These are the most downward pointing spouts I can remember seeing.) Wisteria is also a color from before water bottles were made (Circa 1930.) The Wisteria hysteria was quickly over and I resigned myself to the fact that this is most likely Violet. Violet was first made in 1993 so maybe this is just an early Violet. Weigh in with your opinion.