First, understand why it’s a joyous day
For more than 1,000 years, the Irish have been observing St. Patrick’s Day on March 17 to honor the man who introduced Christianity to the Emerald Isle. While that’s certainly cause for celebration, the real reason people may be so happy on St. Patrick’s Day is that although it falls on Lent, the lenten prohibitions against the consumption of meat would be waived for the day. Yay! Bacon!
Green your theme
The Emerald Isle is of course famous for its lush, green foliage. And green has been synonymous with Ireland since the Irish Rebellion of 1798, when the Irish wore green uniforms to fight the Brits. You can green your St. Patrick’s Day party by using the color in your invites and your decor, or you can “green” your party by sending out evites and otherwise keeping it eco-friendly.