Willis Tower Showing Orange Lights for Saint Patricks?

[Big_Norse]

The past couple nights I've noticed the Willis Tower antennae are lit up orange while most of the other buildings in town are lit green for Saint Patrick's Day. Are the new owners asserting their Englishness, or is there another reason? The Willis Tower website says they use orange lights around Halloween, but no other time.

[Mr Downtown]

They were gold, not orange. Not sure why, though it looked nice next to 311's green top. Maybe it's a Notre Dame shoutout.