The only thing we used to do different than the color wheel in the fabric store where I worked was add brown as it doesn't show on a standard color wheel. The walls started with white, cream, tan, brown, light yellow, yellow, gold, peach, coral, orange, rust, pink, red, burgandy, lilac, purple, wine, eggplant, light blue, blue, royal, navy, greens are tough as the lime greens and true greens need to be split apart, lime, olive, then mint, green, forest, grey, and black. Some of the pinks and peach colors are hard to fit in and change color next to other colors.