Franco Colapinto is racing in Latin America for the first time as a Formula 1 driver at this weekend’s Mexico City Grand Prix. Home hero Sergio Perez retains the largest fanbase, by some distance, but Colapinto’s popularity is growing by the week. A healthy contingent of Argentine fans that visited the US Grand Prix last time out – Colapinto celebrated his points finish with them after the race – and even more should visit Mexico in theory. With no Argentine GP on the calendar, Brazil next weekend will be the closest he has to a home race. The 21-year-old has been outstanding since he replaced…