There is one fear I hear behind almost every permanent brow color question. "What if they come out too dark?" Sometimes it sounds slightly different. Nano Brow Color Guide Houston: How to Choose a Shade That Heals Soft, Natural, and Flattering There is one fear I hear behind almost every permanent brow color question. "What if they come out too dark?" Sometimes it sounds slightly different. "What if my blonde hair ends up with brown brows that overpower my face?" "What if the pigment turns gray?" "What if my hair is almost black? Should my brows be black too?" "What if my hair is dyed and I change it next year?"