A "Photoreactive Sun Canopy"  

I'm not sure how useful (other than from an aesthetic point of view) this thing is, but the latest striking image from Inhabitat is this Photoreactive Sun Canopy .

Visitors to this year’s Salone del Mobile were in for a treat when they strolled through Zona Tortona into a quaint, Italian courtyard on Milan’s Via Borgospesso to encounter Christoph Klemmt’s stunning vortex-shaped OR installation. Composed out of polygonal, photoreactive segments which respond to ultra-violet light, OR’s captivating powers lie in its capacity to correspond its appearance to changes in weather and daylight. Its ’skin’ emits flourishing hues of blue and green when exposed to sunlight and maintains a subtle translucency when the installation is overcome by shade. Best of all, OR’s effects are not limited to daytime - at night, it generates ample atmosphere by becoming a ‘chandelier’ which lavishly floods its surrounding areas with a dramatic dispersement of light.