The Global Color Mapping module allows you to map the colors in your job using LAB color space, a device-independent color space.
Because it uses LAB color space, Global Color Mapping has the following advantages:
However, Custom Spot Color Mapping can yield color values that are slightly more precise, though at a far greater cost in time and effort.
Global color mapping only affects jobs that are added after the color mapping has been added. Jobs that are already queued are not affected.