<P> The Irish arms used by English monarchs since Edward IV had an azure field ; originally the device was three crowns ( now the arms of Munster ) until Henry VIII changed it to a harp . This is still the arms of the modern Irish state , and also appears in the lower left quarter of the Royal Standard of the United Kingdom . In Irish mythology , Flaitheas Éireann , the sovereignty of Ireland , was sometimes represented as a woman in a blue robe . Although the arms of the province of Mide has a blue field , when its device was used as the arms of Ireland , the field was sable . The Irish College in Paris , completed in 1776 , was renovated in 2002 ; the paint uncovered on the chapel walls was described as `` St Patrick 's blue '' by a visiting journalist . As regards green in association with Patrick : in 1681 , Thomas Dineley reported people wearing crosses of green ribbon in their hats on Saint Patrick 's Day . </P>
<P> The Irish arms used by English monarchs since Edward IV had an azure field ; originally the device was three crowns ( now the arms of Munster ) until Henry VIII changed it to a harp . This is still the arms of the modern Irish state , and also appears in the lower left quarter of the Royal Standard of the United Kingdom . In Irish mythology , Flaitheas Éireann , the sovereignty of Ireland , was sometimes represented as a woman in a blue robe . Although the arms of the province of Mide has a blue field , when its device was used as the arms of Ireland , the field was sable . The Irish College in Paris , completed in 1776 , was renovated in 2002 ; the paint uncovered on the chapel walls was described as `` St Patrick 's blue '' by a visiting journalist . As regards green in association with Patrick : in 1681 , Thomas Dineley reported people wearing crosses of green ribbon in their hats on Saint Patrick 's Day . </P>
what is the color of st patrick day
what is the color of st patrick day
green
green