The NFL is honoring breast cancer awareness in October. Favre is one of four Vikings who will use pink equipment during Monday's game against Green Bay at the Metrodome, according to league spokesman Brian McCarthy.
Favre's wife, Deanna, is a breast cancer survivor.
Designated players throughout the NFL will be wearing pink cleats, wristbands, gloves, sideline hats and captain patches among other items during October.
Favre will be facing his old team for the first time on Monday night. He signed with the Vikings this season. He spent 16 seasons with the Packers.
The Packers could get veteran left tackle Chad Clifton back from a sprained right ankle for their matchup with the Vikings.
Packers coach Mike McCarthy said Monday that Clifton's injury is improving, and the team will try to work him back into practice this week in hopes of getting him ready for the Vikings.
Clifton hurt his ankle early in the third quarter of the Packers' Sept. 20 home loss to Cincinnati, and he sat out Sunday's victory at St. Louis. A 10-year veteran, Clifton's return could stabilize what has been a shaky Packers line.
The Associated Press contributed to this story.