Having saved colour palettes and CMYK values in the colour picker, how do I add the Pages 5.6.1 colour picker to my MAC system directory (OS 10.10.5), so it will work with other programs e.g. Word? I have seen it done way back with Tiger OS.

What do you want to replicate from El Capitan to Yosemite?

1. The file containing all of the stored color swatches from the Apple color picker?
2. The color picker itself?
3. Both?

Item 1 is a simple one-file transfer.

1. From the Finder, press the shift+command+G keys to Go to Folder. Copy/Paste the following into that dialog:
   ~/Library/Colors
2. The file that has your stored color swatches is: NSColorPanelSwatches.plist
   1. On Yosemite, quit Word, Pages, and other applications that use the Apple Color Picker
   2. Repeat step 1 on your Yosemite machine
   3. Rename (do not delete) the existing Yosemite NSColorPanelSwatches.plist to NSColorPanelSwatches.plist.old
   4. Copy the El Capitan color swatch file into this Yosemite file location
3. Launch the application(s) that use the Apple color picker to see the El Capitan sourced color swatches.

I use the free ColorPicker, which gives me an independent Apple Color picker (including any plug-ins). It picks up the contents of the NSColorPanelSwatches file.