The juice from most purple grapes is definitely greenish-white; the crimson shade emanates from anthocyan pigments (also known as anthocyanins) present from the pores and skin on the grape; exceptions would be the rather uncommon teinturier versions, which actually have crimson flesh and produce pink juice. White wine[edit] "Nevertheless http://wine-blogger28406.blogrelation.com/101990/what-does-blog-about-wine-mean