Should fit this Open Source color management list: http://arstechnica.com/business/news/2012/01/red-hat-developer-explains-open-source-color-calibration-hardware.ars http://www.hughski.com/ -- met vriendelijke groeten, Ernst Shareware too: 330+ paper white spectral plots: http://www.pigment-print.com/spectralplots/spectrumviz_1.htm