Eu consertei isso criando este arquivo e definindo perms para 644, e proprietário root: root:
Nome do arquivo: /etc/polkit-1/localauthority.conf.d/02-allow-colord.conf
Conteúdo:
polkit.addRule(function(action, subject) {
if ((action.id == "org.freedesktop.color-manager.create-device" ||
action.id == "org.freedesktop.color-manager.create-profile" ||
action.id == "org.freedesktop.color-manager.delete-device" ||
action.id == "org.freedesktop.color-manager.delete-profile" ||
action.id == "org.freedesktop.color-manager.modify-device" ||
action.id == "org.freedesktop.color-manager.modify-profile"
) && (
subject.isInGroup("{nogroup}")
)
)
{
return polkit.Result.YES;
}
});