Colors = id:canvas value:rgb(0.937,0.937,0.937) id:linemark value:gray(0.8) id:linemark2 value:gray(0.9) BackgroundColors = canvas:canvas PlotData = mark:(line,linemark) from:start till:1 color:yellow shift:(20,-5) text:René Arnoux (Lap 1) from:1 till:18 color:darkblue shift:(20,-5) text:Nelson Piquet (Laps 2–18) from:18 till:end color:redorange shift:(20,-5) text:Patrick Tambay (Laps 19–45)