https://manpages.ubuntu.com/manpages/xenial/man3/XcmsTekHVC.3.html
Ubuntu Manpage: XcmsColor, XcmsRGB, XcmsRGBi, XcmsCIEXYZ, XcmsCIEuvY, XcmsCIExyY,
ubuntumanpage
https://manpages.ubuntu.com/manpages/xenial/man3/XcmsCIEXYZ.3.html
Ubuntu Manpage: XcmsColor, XcmsRGB, XcmsRGBi, XcmsCIEXYZ, XcmsCIEuvY, XcmsCIExyY,
ubuntumanpage
https://manpages.ubuntu.com/manpages/xenial/man3/XcmsColor.3.html
Ubuntu Manpage: XcmsColor, XcmsRGB, XcmsRGBi, XcmsCIEXYZ, XcmsCIEuvY, XcmsCIExyY,
ubuntumanpage