Increasing the Diversity of Marketable Raspberry Colors (image) American Society for Horticultural Science Share Print E-Mail Caption Black raspberry (shown) was one of the colors tested for firmness and other postharvest characteristics to determine how they compared with red raspberries. Credit Photo by Julia Harshman. Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.