American Currency is All One Color
American dollars may be powerful, but they are anything but exciting. n the majority of countries, currency notes are characterized by various colors and sizes corresponding to their respective denominations, often accompanied by metallic accents, which are visually more appealing compared to the standard green and black design.
For people who come into the country and have to use the bills, it is hard for them to distinguish the different values when they have to grab them out of their wallets quickly.