An elementary school in Weld County District 6 has come under some controversy for an anti-gang policy that prohibits students from wearing specific numbers, including Broncos Peyton Manning's number 18 jersey.

Students can wear sports jerseys and other numbers, but to third-grade Weld County student Konnor Vanatta, 8, the news that he can't wear his hero's jersey number has been upsetting.

“Peyton Manning's been my favorite football player for a long time," Vanatta told FOX31. "They told me I couldn’t wear 18 anymore because it’s a gang number and I had to take it off.”

According to the Weld County School District 6 dress code manual, students are not allowed to wear the numbers 13, 14, 18, and their inverses, 31, 41, and 81 because of their gang affiliations. Also prohibited in the dress code are solid shirt or pants colors of red and blue and the displaying of bandanas, or shaved or "notched" eyebrows.

The number 18 is associated with the 18th Street Gang of southern California. Just last year, Greeley Police were able to arrest five but say they've been tracking their activity for the past 14 years.

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  • Pittsburgh Steelers v Denver Broncos

    DENVER, CO - SEPTEMBER 9: Quarterback Peyton Manning #18 of the Denver Broncos runs onto the field during a game against the Pittsburgh Steelers at Sports Authority Field Field at Mile High on September 9, 2012 in Denver, Colorado. (Photo by Justin Edmonds/Getty Images)

  • Peyton Manning

    Denver Broncos quarterback Peyton Manning looks to pass against the Pittsburgh Steelers during the first quarter of an NFL football game, Sunday, Sept. 9, 2012, in Denver. The Broncos won 31-19. Manning got his first touchdown as a Bronco and the 400th of his career with a 71-yard pass to Demaryius Thomas during the third quarter. (AP Photo/David Zalubowski)

  • Pittsburgh Steelers v Denver Broncos

    DENVER, CO - SEPTEMBER 09: Quarterback Peyton Manning #18 of the Denver Broncos and quarterback Ben Roethlisberger #7 of the Pittsburgh Steelers meet at mid field after the Broncos defeated the Steelers 31-19 at Sports Authority Field at Mile High on September 9, 2012 in Denver, Colorado. (Photo by Doug Pensinger/Getty Images)

  • Pittsburgh Steelers v Denver Broncos

    DENVER, CO - SEPTEMBER 09: Quarterback Peyton Manning #18 of the Denver Broncos warms up prior to facing the Pittsburgh Steelers at Sports Authority Field at Mile High on September 9, 2012 in Denver, Colorado. (Photo by Doug Pensinger/Getty Images)

  • Peyton Manning

    Denver Broncos quarterback Peyton Manning lines up against the Pittsburgh Steelers during the first quarter of an NFL football game, Sunday, Sept. 9, 2012, in Denver. (AP Photo/David Zalubowski)

  • Peyton Manning, Steve Freeman

    Denver Broncos quarterback Peyton Manning (18) argues with back judge Steve Freeman (133) during the first quarter of an NFL football game against the Pittsburgh Steelers, Sunday, Sept. 9, 2012 in Denver. (AP Photo/David Zalubowski)

  • Peyton Manning

    FILE - In this Aug. 26, 2012, file photo, Denver Broncos quarterback Peyton Manning (18) passes against the San Francisco 49ers during the first quarter of an NFL preseason football game in Denver. No need to ask Steelers coach Mike Tomlin if Peyton Manning is back. As far as Tomlin is concerned, the Broncos quarterback never left. (AP Photo/Jack Dempsey, File)

  • Peyton Manning

    Denver Broncos quarterback Peyton Manning (18) watches from the sidelines during the first half of an NFL preseason football game against the Arizona Cardinals, Thursday, Aug. 30, 2012, in Glendale, Ariz. (AP Photo/Ross D. Franklin)

  • Peyton Manning, Adam Weber

    Denver Broncos' Peyton Manning (18) and Adam Weber (2) warm up prior to a NFL preseason football game against the Arizona Cardinals, Thursday, Aug. 30, 2012,in Glendale, Ariz. (AP Photo/Matt York)

  • Peyton Manning

    FILE - In this file photo taken Aug. 26, 2012, Denver Broncos quarterback Peyton Manning (18) warms up before an NFL preseason football game against the San Francisco 49ers in Denver. John Elway lured Manning to Denver with a five-year, $96 million deal, yet the 36-year-old quarterback is admittedly on a year-to-year basis, which means he's all about winning now, not presiding over a rebuilding project. (AP Photo/Jack Dempsey, File)

  • Peyton Manning

    FILE - In this file photo taken Aug. 26, 2012, Denver Broncos quarterback Peyton Manning (18) warms up before an NFL preseason football game against the San Francisco 49ers in Denver. John Elway lured Manning to Denver with a five-year, $96 million deal, yet the 36-year-old quarterback is admittedly on a year-to-year basis, which means he's all about winning now, not presiding over a rebuilding project. (AP Photo/Jack Dempsey, File)

  • Peyton Manning

    Denver Broncos quarterback Peyton Manning (18) runs off the field after an NFL preseason football game against the San Francisco 49ers in Denver, Sunday, Aug. 26, 2012. The 49ers won 29-24. (AP Photo/Jack Dempsey)

  • Peyton Manning

    Denver Broncos quarterback Peyton Manning (18) passes against the San Francisco 49ers during the first quarter of an NFL preseason football game in Denver, Sunday, Aug. 26, 2012. (AP Photo/Jack Dempsey)

  • Peyton Manning, Jacob Tamme

    Denver Broncos quarterback Peyton Manning (18) celebrates with tight end Jacob Tamme (84) after throwing a touchdown pass to wide receiver Eric Decker against the San Francisco 49ers during the first quarter of an NFL preseason football game in Denver, Sunday, Aug. 26, 2012. (AP Photo/Joe Mahoney)

  • Peyton Manning

    Denver Broncos quarterback Peyton Manning waves to the crowd as he leaves the field following an NFL football game against the Pittsburgh Steelers, Sunday, Sept. 9, 2012, in Denver. The Broncos won 31-19. (AP Photo/David Zalubowski)