According to the abstract (http://science.sciencemag.org/content/352/6290/1190 http://science.sciencemag.org/content/352/6290/1190), >Diffraction-limited focus

According to the abstract (http://science.sciencemag.org/content/352/6290/1190 http://science.sciencemag.org/content/352/6290/1190), >Diffraction-limited focusing is demonstrated at wavelengths of 405, 532, and 660 nm with corresponding efficiencies of 86, 73, and 66%. ...but I'm not clear on whether that is from a single lens or if they constructed different lenses for each color. (Those wavelengths correspond to violet, green, and red light fwiw) EDIT: the full paper makes it clear this is three separate lenses, so yeah, you're right.