Checks whether the DeviceN process color space matches the PDF/X output intent color space, i.e. whether the DeviceN color space contains only process colors.
The DeviceN color space is defined as a list of names. These names can refer to the process colors (CMYK, RGB or Gray) or spot colors. Spot colors can have an alternate in CMYK for output devices that do not recognize their name, or they can just be a name without color definition. If the color is just a name (for example: "Silver" or "MySpot"), it cannot be used on other devices.