Stains in the Oval Office?

What stains did GW leave--inquiring minds want to know?

From the Post this morning, on Obama's meeting with bankers:

""Excess is out of fashion," Obama said, according to participants in the gathering.

The president held himself up as an example, saying that he had not yet renovated the Oval Office and was still using George W. Bush's furniture, even noting the stains on the carpet. He urged the banks to show comparable "constraint and responsibility," adding that the nation had undergone a cultural shift.