Red seedless grapes are small to medium in size and are round to slightly oblong in shape, growing in medium to large clusters. The hue of a Red seedless grape can vary widely depending on the variety and local growing conditions, but it usually ranges from a light red to a deep burgundy.
In general, red grapes tend to have a sweeter flavor profile than green varieties. ... Green and red grapes differ in color and taste. They also differ in the levels of antioxidants that they contain. Red grapes contain more antioxidants than green varieties