The color cast (if it is only a slight cast, e.g. to greenish) may be caused by the fact that the color management software creates gamma curves with an individual gamma value for each RGB channel. They normally differ only very slightly, e.g. RGB = 2.18, 2.24, 2.21. In most cases, the individual gammas deliver best neutral results. For some cases, this may cause a slightly color shift. If this happens, please try the 'Laptop' mode for your LCD display. The 'Laptop' mode creates gamma curves with the same gamma value for all three RGB channels.