The most iconic racing livery ever?

Gulf

Gulf vs Martini Liveries Celebrated At The Concours of Elegance Jalopy August 13, 2021

JWA and the iconic Gulf livery made famous by Steve McQueen in the film Le Mans

Porsche 917 1970

Gulf appeared the following year on the smaller 908, designed for tighter twistier circuits

Porsche 908/3 1971

Mirage GR8 1975

It's not just for Porsche, it suits the Mirage too.  The GR8 won Le Mans that year with Derek Bell and Jacky Ickx