"It's Not Easy Being Green" is a song sung by the Leprechaun in the Season 2 episode "The Lucked-up St. Paddy's Day: Part 2 ". The tune centers on the Leprechaun lamenting about hard it is being an attractive green person and how people only care for his gold. From the title alone, it parodies the song "Bein' Green", sung by Kermit the Frog.
It's not that easy being green.
Having to spend each day being chased out of the scene.
When I think it could be nicer being yellow or blue or red
Or something much more colorful like that.
It's not so easy being green.
It seems you blend in with so many other earthly things.
People tend to pass you over.
'cause you're not as important.
As the gold you carry with you.