The team does not normally wear green bands.
Many Iranians are viewing the team's bands as a sign of support for Iranian opposition leader Mir Hossein Moussavi, although that has not been confirmed.
Green is the campaign color of Moussavi and has been widely worn by his supporters who have staged massive rallies in Tehran before and after last week's presidential election.
Moussavi is disputing the results of the vote that gave President Mahmoud Ahmadinejad a second term and is calling for a new election.
The players took the wrist bands off when the team came out for the second half of the game that was taking place in Seoul, South Korea.
