Purple
'Black Krim' is a mahogany-colored variety with a true tomato taste. A very heavy producer that's prone to cracking. Second choice is 'Black Prince'.

Orange
'Mennonite Orange' is a large, bountiful tomato and truly one of the best-tasting orange varieties. Close second is 'Kellogg's Breakfast'.

Red
'Sioux' is a productive heirloom with smaller rich deep-red colored fruits that have a full-bodied taste. Others include 'Rose de Berne' and 'Costoluto Genovese'.

Green
'Green Zebra' is a smaller-sized milder-tasting variety, but it's a heavy producer that shows pink and yellow on its shoulders when ripe. Others include 'Aunt Ruby's German Green' and 'Green Grape'.

Pink
A tie between the 'Caspian Pink', with its mild sweet flavor and flat fruit, and the 'Pink German Tree Tomato', which has a mild but sweet low-acid taste and treelike stems.