Pantone.

These hand made second hand Pantone booklets are a great idea, in terms of getting the swatches easily bound and simple to look through i was thinking of creating a few pull out pieces of paper including swatches in them, that can also be taken out, this way the reader interacts with the publication and thus the paper again.

At the bottom is an example of how the swatches would be held in place along a thin strip of black paper.