Old Hibernia Bank Building:

Showing Its Colors
The former Hibernia Bank Building in New Orleans' Central Business
District, has been displaying purple, green and gold lights on its domed
top in honor of Mardi Gras for many years.  Heralding the Mardi Gras
season, the display is a local landmark and one that's always welcome.
When the building on Gravier Street was constructed in 1921, it was, at
that time, the tallest building in the state of Louisiana.  Hibernia sold the
building in 1983, but retained the lease.  A national bank has
purchased Hibernia since that time, but still illuminates the dome of the
building in the same time-honored tradition:  purple, green and gold
during Mardi Gras and red and green during the holiday season.
Above, November, 2008, red, white and blue in honor of
the presidential election.  Below, holiday season, 2008.  
These 2 photos courtesy of Infrogmation, Wikipedia
Commons.
Above and below, Hibernia Bank interior scenes, 1930's.
Hibernia Bank Building, late 1920's
Hibernia Bank, between 1910-20
Above, view down Carondelet Street
toward Hibernia Bank Building, 1927;
below, same view today.