Actually, it does say it in the patent - quote: "Produces multiple unique flowers which will then produce new flowered sepals having pink, mauve, and blue colors." The catch does seem to be that it in strongly acidic or alkaline soils it does the usual pink/blue thing, so I am not sure how truly unique it really is - lots of hydrangeas can't make their minds up when in neutral soil. But hey, you don't actually have to produce scientific proof when you make a patent application - they are just 'claims'. I think that is a significant weakness in the US Plant Patent system (to put it politely!).