It's a simple and creative improvisation of a mundane (or sometimes left-over) infrastructure like the storm water pipe into a catchy design for the street. This public art installation is not a formal project commissioned by the city or anything like that. It was done spontaneously by urfun lab, a group of young professionals ranging from architects, urban designers, graphic designers, landscape architects, to event managers. They are just a group of people who love to have fun with their city, and decided to spice up the street with some colours on a lazy Sunday morning.
On first glance, I thought they painted the inside of the pipes, but it turns out that it's just the diffused lights from the colourful cellophane. And that's all that they did - taped the transparent coloured cellophane to the back of the pipes and then the sun did the rest.
All images are reblogged from the website.