If you haven't already heard, Bun B's Rap Coloring and Activity Book by Bun and Shea Serrano is now available for pre-order from Amazon with a release date of September 17. What more could we ask for but 48 pages of our favorite rappers and singers in coloring book form? To prepare ourselves for this much-anticipated day, we've rounded up The 20 Best Crayola Crayon Colors of All Time, from the standard colors to ones from the Magic Scent pack, Changeables, Color Mix-Up, and more. Keep in mind, some of these babies have unfortunately retired since our coloring book days.

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