Roma Tomato a plum tomato popularly used both for canning and producing tomato paste because of their slender and firm nature. Commonly found, Roma tomatoes are also known as Italian tomatoes or Italian Plum Tomatoes. Roma tomatoes are egg or pear shaped and red when fully ripe. They have fewer seeds than other varieties which make them good for sauces. This sketch is of 3 tomatoes that varied in color from a very light green to a ripe red/orange. Holbein watercolors in a Stillman and Birn sketchbook.