Marianne's chart is great for a 1-page chart which is probably what most people want. However, when it comes to matching colors as I work, the blocks are too small for me to get a good feel for the color. I printed this one off on 5 sheets of cardstock and use it when I'm making cards. The colored part didn't print on my computer, so I could just fill it in with the real markers. I color in the block where the foreign symbols are. It also has the color name which I like. I use the 1 page chart when I'm going to the store and the 5 page chart when I'm working.
http://www.too.com/copic/faq/color