The team has asked fans to proudly wear red for gameday.
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Toro, the team's mascot, and a Texans cheerleader also said the rivalry has sparked a special rally to get fans pumped for kickoff.
SEE RELATED STORY: Texans mascot Toro surprises his biggest fan during COVID-19
The rally, scheduled for Saturday at NRG from 1 p.m. to 4 p.m., includes a free car stenciling and a socially distant meet-and-greet with the cheerleaders and Toro.
"We are going to stencil your car, and the first 50 fans are going to get a sign that says, 'We are Texans' by Mattress Firm," said Courtney, one of the team's cheerleaders.
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The first 200 fans will also get a free Battle Red Day T-shirt by Mattress Firm.
The Colts hold a 7-4 record to the Texans' 4-7 record.
Kickoff is set for 1 p.m. at NRG Stadium.