Saint Patrick's ministry was in Ireland, and Ireland is known for its green landscape. Green is the color of Ireland (often called "The Emerald Isle"), the color of shamrocks, the official "Irish" color, as it were.
Green
Ireland is best known for its rolling, green hills and for the home of St. Patricks Day. (Even though the person that St. Patricks Day was named after, wasn't Irish or from Ireland.)
On saint patricks day we where green and have parades and the irish eat corn beef.
Yes
Ireland is a very green country and that is where Patrick worked as a bishop and missionary.
anything above 5mw is illegal, also green and blue lasers are illegal in Ireland.
White and gold are also prominent.
Because he is the Patron Saint of Ireland and Green is their national color.
Yellow is not associated with St. Patricks Day at all. It's green, green, green.
they were green
St Patricks day is the Irish National Day and Leprechauns are only found in Ireland, people therefore dress up like Leprechauns on that day. Of course they can't really look like Leprechauns because the tallest of them is only 18inches and the smallest not less than 14 inches.