Suggestion - palette from existing drawing

I've been playing around with a macro to create a new palette from an existing .cdr. Maybe someone can short-cut my quest.

The main reason is to augment the already excellent ColorReplacer.

ATM, you have to "know" which colour to replace. But what if you (say) have two greens - one C 100, M 0, Y 90, K 0 and another C 100, M 0, Y 95, K 0.

Both will look the same on the screen, and one or the other could easily be missed. If you had a palette of all colours in the drawing (that would then be accessible in ColorReplacer), you could easily click on and replace (say) green #1 with PMS 334, green #2 with PMS 334, green #3 with PMS 334 etc without knowing what the greens actually are.

Any helpers?

Cheers!