this is a great tutorial and includes patterns. very step-by-step bordering on the ridiculous, but also handy. perfect tips if your goal is good-looking and easy felt food. Can find felt food on etsy, but apartment therapy has free tutorials
Tuttle advises to ask your colorist for "hand-painted caramel highlights paired with a warm or dark chocolate base." And like balayage, it grows out seamlessly, since the roots are not necessarily dyed.