My mother-in-law recently made this for my kids and a couple of girls at church. I got to thinking about how it came about so I looked it up. You know how you look something up and are disappointed because it wasn't what you thought it would be. Well, this was even better than I thought it would be!
Spurgeon was the one to create the base for the wordless book in a sermon he did with some orphans in 1866. He used Red, Black and White. Moody later added Gold in 1875. Since then more colors have been added.