Yes, this is Disney Hall. The skin of the building is Titanium, or that is how I remember it. Checking the Wiki, it says burnished stainless steel...I believe the former as to these panels.
At Founder's Hall, the opposite side was and is in fact Stainless steel that had to be made matte because it was blinding people, drivers and people living near by. From article in 2005:
"They are working to lessen Disney's luster. In an unexpected turn after the hall opened in October 2003, neighbors and passersby started complaining about a glare coming off the highly polished exterior. A study commissioned last year by the county revealed that the venue acted like a massive reflector, magnifying rays of sunlight to reach temperatures as high as 138 degrees Fahrenheit in nearby spots."
Traveller
Guest
06-Aug-2013 22:15
Fabulous lighting, making for an intriguing image; is that copper?