Yes but they would normally have the nismo logo somewhere on the inside in the fibre glass, like in the thread below if they are portrayed as nismo
viewtopic.php?f=157&t=48004&hilit=nismo+v1
Did anyone watch the F1 forum afterwards. One of the Red Bull team members suggested Button stopped in Vettels pit-lane on purpose and called Mclaren cheats I thought he was joking at first but for sure DC and JH weren't sure either if he was joking or been serious