The most common question that I get asked is how to distinguish color varieties of US stamps. Over the next few months I hope to be able to put together some pretty comprehensive color charts of United States stamps. Ebay only allows 10 photos per guide so please be sure to view the continuation guides

#72 Blue            #72a Pale Blue    #72b Dark Blue    #75 Red Brown    #76 Brown

#76a Black Brown    #78 Lilac           #78a Grayish Lilac    #78b Gray            #78c Blackish Violet