In a food processor, combine the apricots, coconut, lemon zest and orange zest. Cover and process for 1-2 minutes or until blended. Sprinkle work surface with 1 tablespoon of sugar. Knead apricot mixture until smooth about 15-20 times. Add orange juice if necessary to moisten mixture. Shape into 1-in. balls and roll in remaining sugar. Store in an airtight container.