Sorry Menorca Queen - I've not heard of the wine, only this -
"Molson Coors is introducing a new "cold" bottle, which turns the Coors Light mountains from white to blue when the beer is chilled to four degrees celsius or less..."
Thanks for that. It is obviously a similar thing. The wine label has a ship on it which turns blue when the wine has reached optimum temp for drinking. I think the wine is Spanish.