Generally, the black and green teas are made from whole leaves that are picked, held for processing and then fermented or roasted before being packaged into tea bags. With colors that range from pale yellow or green to dark rust brown, depending on the age of the buds, white tea provides a smooth delicate flavor that may be slightly sweet and will not typically contain a grassy undertone common in green teas. White tea is not only higher in cancer fighting compounds but also lower in caffeine content. It is available in a variety of flavors and types.