Said "R" inspired the team's new custom typeface, designed so that every single digit could be read well from a distance, whether in the arena or on television. Red once again became the dominant color, with silver and black as secondary. In 2009, the Rockets invoked the championship years with an alternate red uniform, featuring gold numbers and side stripes. The Rockets had two sleeved alternate jerseys for the 2015–16 season, an alternate silver-colored uniform whose design referenced the design of NASA's Gemini-Titan rocket, and a red and gold jersey featuring the nickname "Clutch City". For the 2016–17 season, the Rockets began to wear a black alternate uniform. Following the switch to Nike in 2017, the Rockets made some slight tweaks to the uniform. While the black "Statement" uniform remained mostly unchanged, the red "Icon" and white "Association" uniforms now feature truncated side striping that no longer wrap around the shoulders. The Rockets also wore a "City" uniform that was similar to their red "Icon" uniforms but with Chinese lettering in place of "Rockets" in front; the design was tweaked the following season with a deeper red and old gold accents. On June 6, 2019, the Rockets unveiled a new secondary logo that depicts a basketball as a planet, and the ring has the "Houston Rockets" displayed with the classic "R" in the middle. A new uniform set was unveiled two weeks later. The red "Icon" and white "Association" designs featured updated block lettering and bold side panels that depict a launching rocket. The black "Statement" uniform remained with a few alterations. In addition, the Rockets brought back their throwback "ketchup and mustard" 1976–95 red uniform as part of Nike's "Classic" series. For the 2019–20 "City" uniform, the Rockets eschewed the Chinese New Year-themed designs and went with a NASA-inspired space theme. The Rockets' "City" uniform for the 2020–21 season featured a powder blue base as a nod to the city of Houston. The colors resembled those of Houston's former NFL team, the Houston Oilers. For the 2021–22 season, the Rockets announced a partnership with Credit Karma to be featured on the team's jerseys as a sponsor. The 2021–22 Rockets' "City" uniform referenced various uniform designs from the past. The navy base and white pinstripes were taken from the 1995–2003 uniforms. The modified "ketchup and mustard" logo on the waist, as well as a diagonally arranged "Houston" wordmark and block