PLANTS - Roses are red: Why some petunias are blue

Researchers have uncovered the secret recipe to making some petunias such a rare shade of blue. The findings may help to explain and manipulate the color of other ornamental flowers, not to mention the taste of fruits and wine, say researchers. From the flowers' point of view, the findings also have important implications, since blue petals instead of red might spell disaster when it comes to attracting pollinators ...

http://www.sciencedaily.com/releases/2014/01/140102133223.ht