On the left below is one of my shared bank bags, in which I have stored all the recipes for adornments and mount tack. As you can see, it's impossible to determine anything useful just looking at it. On the right below is the same bag, but I have color-shifted some of the icons a bit. The pink book has red adorns, the green books are nail adorns, the unchanged books are white adorns, and the blue books are mount tack. Suddenly, I can tell at a glance which books I need to scan to find whatever recipe it is I am looking for. I'd like to see this done on all recipe books that are HEIRLOOM or NO-TRADE. The books that can go into a spell/book depot are fine as is, because you can just use a text search to find what you want!