Heat oven to 375°F. Shape dough into 1-inch balls. For each cookie, place 3 balls, sides touching, in triangular shape on ungreased cookie sheet. Repeat with remaining dough, placing cookies 2 inches apart. With bottom of glass dipped in sugar, flatten each three-leaved cookie. With sharp knife, score each leaf in half; do not cut through. Sprinkle cookies with green colored sugar.