Alternately many grapes are pretty blueish and almost all are greenish before fully ripe. Ex: https://www.google.com/search?tbm=isch&q=wine%20grape&tbs=imgo:1

Alternately many grapes are pretty blueish and almost all are greenish before fully ripe. Ex: https://www.google.com/search?tbm=isch&q=wine%20grape&tbs=imgo:1 https://www.google.com/search?tbm=isch&q=wine%20grape&tbs=im...