Excellent 'Dear Roger' piece by Derek Daly in Racer:
a-letter-to-roger-penske-color-confusion
Basically, Derek is calling for a return to consistent liveries for cars throughout the season. It really has become ridiculous. I spend the first half of many races trying to figure out who I'm watching because they have a different livery at every friggin race
Look back to the 90's Golden Era. You always knew which team and which drivers were in the Marboro cars, the Target cars, the Kool cars, the Kmart cars, etc.