I've taken photos for the Race for the Cure team made up of fellow employees for four years now. We always meet at the Salmon Street Springs fountain. I do not remember seeing in pink any other year. And the pink didn't last too long. I'm happy that I got this photograph! Based on what I read on the city's Web site, I think this cycle is a partial wedding cake.
From the City of Portland Web site:
Salmon Street Springs, Location: Waterfront Park, Naito Parkway at SW Salmon, Hours: 6:00 AM-10:00 PM during spring/summer/fall
Robert Perron Landscape Architects and Planners designed the fountain which was dedicated in 1988. A computer regulates the changing patterns of the water display. At full capacity, the fountain recycles 4,924 gallons of water per minute through as many as 137 jets at once. There are 185 jets. The three cycles of the fountain are called misters, bollards, and wedding cake.