This is an interesting looking book. Designed for collectors of historical beads, archeologists etc to help them identify and name a colour they find and the whole website is full of products which aim to help in that area.
The idea of identifying colours and giving them the same name is an interesting one. The BBC recently ran a program based just on this idea 'Do you see what I see?' and you can see some clips here and read more here.
Do you ever find yourself calling a colour one thing whilst others call it something else?