I've got some questions about the Red 5 with which Nigel Mansell became synonymous, Mansell quickly became my boyhood hero when I first started watching F1 in 1991. How exactly did the "Red Five" thing come about? I've seen photos and footage of Mansell's Williams at the start of 1985 and he had a white 5 - while his first victory at Brands he had red 5. What was the first race Williams changed the colour, and why did they?
I understand some teams often change the colour of their numbers to help tell the cars apart - off the top of my head Stewart did it in 1999 when Barrichello had red 16 and Herbert green 17. But if that's the case, why did Thierry Boutsen's car have a white 5, had Mansell made red 5 his own already by 1988, and if that's the case when roughly speaking was the phrase coined?
Thanks for any info