In the foreground , two Roman magistrates are identified by their toga praetexta , white with a stripe of Tyrian purple .
Caesar , riding in the chariot , wears the solid Tyrian purple toga picta .
In the foreground , two Roman magistrates are identified by their toga praetexta , white with a stripe of Tyrian Tyrian .
Caesar , riding in the chariot , wears the solid Tyrian purple toga picta .