private Color?FromUnkown(iText.Kernel.Colors.Color colorPfd, float alpha)
{
var value = colorPfd.GetColorValue();
switch (colorPfd.GetNumberOfComponents())
{
case 0:
return(null);
case 1:
return(FromGray(value[0], alpha));
case 3:
return(FromRGB(value[0], value[1], value[2], alpha));
case 4:
return(FromCmyk(value[0], value[1], value[2], value[3], alpha));
default: return(null);
}
}
