Below is a chart that explains how to use Flat White, Cinnamon Sticks and Pepsi Cola pigments according to the Fitzpatrick phototype scale. These 3 colors were created by Anna Kutsevolova before she came out with BROVI+ line. 

Flat White = Warmer Version of Roasted Chestnut

Pepsi Cola = Warmer Version of Bitter Chocolate

Cinnamon Sticks = Warmer Version of Freckle

Please, note that even though the above colors were created to be used for hair strokes technique, they also work great for powder brows. Just make sure to control color saturation by adding 1-2 drops of dilutor per every 8-9 drops of pigment accordingly.