Numerous Formula 1 teams are running one-off designs at the United States Grand Prix this weekend. One of the season’s most popular and commercially lucrative races, it’s an ideal opportunity to do so. Championship leaders McLaren have revisited their chrome livery for the race in Austin. In between their now-customary papaya, there is a strip of metallic paint. Zak Brown’s team last ran the colour scheme at the 2023 British GP, their home race. It’s an homage to the Vodafone years between 2006 and 2013, a period that saw Lewis Hamilton win his first world championship. Meanwhile, Alpine have …