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So here is my version of a Colour Combination Book using CTMH's 60 CS colours (plus some retired colours).
Book cover: 5" x 9 5/8".
Colour swatches: 3" x 4.5".
60 pieces of CS add up to quite a bit, lol.
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In the back, I added a couple of pages for RGB Values and (eventually) Copic Colours.
Enjoy,
Deneen