Yes, thats what I'm trying to do. I need to set a set of colours, then run the script which finds the colours I've specified in the script and changes them to other specific greys. I should explain we generate lots of charts by automation to go both online and in print. Some of our print sites only do black and white so we have to change the colours. We have to be able to map specific CMYK colours onto specific greys rather then leave it to the built in filter as the tonal difference sometime becomes unclear on certain line charts. Its the actual how do I do it bit I'm struggling with
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