The Color Yellow
The Simpsons: Season 21, Episode 13
The Simpsons family tree is uprooted in this flashback-filled fix. Meanwhile, Lisa investigates her ancestry for an assignment and is disheartened by her findings.
Show: The Simpsons
Air date: February 21, 2010
Written by: Ian Maxtone-Graham and Billy Kimball
Episode number: 13
Production code: MABF06