The information provided by spectral lines and other deviations from the perfect black body spectrum represents an entropy deficiency. (newscientist.com)
In a similar way, the Hawking radiation from a black hole is not that of a perfect black body. (newscientist.com)
The spectrum of radiation from a black body is completely described by its temperature, so if the Sun were a perfect black body this is all the information sunlight would contain. (newscientist.com)