The Agricultural Marketing Service (AMS) of the Department of Agriculture (USDA) proposes to revise the U.S. Standards for Grades of Shelled Walnuts and the U.S. Standards for Grades of Walnuts in the Shell. AMS proposes to include red colored walnuts. In addition, AMS proposes to remove the "Unclassified" section. The changes will modernize the standards, and meet growing consumer demand by providing greater marketing flexibility.