Green.

Bully's Advent Calendar: Day 18

365 Days with Ben Grimm: Day 352

Panel from Marvel Comics Presents #18 (Early May 1989), script by Glenn Herdling, pencils and colors by Richard Howell, inks by Joe Sinnott, letters by Jack Morelli

Purple.

Bully's Advent Calendar: Day 17

365 Days with Ben Grimm: Day 351

Panel from Marvel Two-in-One #8 (March 1975), script by Steve Gerber, pencils by Sal Buscema, inks by Mike Esposito, colors by George Roussos, letters by Charlotte Jetter

Orange.

Bully's Advent Calendar: Day 16

365 Days with Ben Grimm: Day 350

Panels from Marvel Holiday Special 2005 one-shot (January 2006), script by Shaenon Garrity with special thanks to Andrew Farago, pencils by Roger Langridge, inks by Al Gordon, colors by J. Brown, letters by Dave Lanphear

Bully's Advent Calendar: Day 15

Yellow.