The modern image of the leprechaun sitting on a toadstool, having a red beard and green hat, etc. is clearly a more modern invention, or borrowed from other strands of European folklore. The most likely explanation for the modern day Leprechaun appearance is that green is a traditional national Irish color dating back as far as 1642. The hat might be derived from the style of outdated fashion still common in Ireland in the 19th century. This style of fashion was commonly worn by Irish immigrants to the USA, since some Elizabethan era clothes were still common in Ireland in the 19th century long after they were out of fashion, as depicted by the Stage Irish. The buckle shoes and other garments also have their origin in the Elizabethan period in Ireland.