Princeton's Downtown Scarcity of Recycling Receptacles
You're looking at the only downtown location I know of where recycling containers can be found on the streets, at Hinds Plaza next to the public library. They are expensive stainless steel models, but their design could be improved to better distinguish them from the trash containers they are, or should be, paired with.
I've informally explored and documented recycling receptacle designs--which vary from effective to self-defeating--in Princeton and elsewhere, many of which are posted at www.recyclingcontainers.blogspot.com. A post about how the Hinds Plaza containers could be retrofitted to improve their function can be found here.