Guerlain ecrin 6 couleurs rue des francs bourgeois 10 combines soft beige shades with browns taupe a dark brown eyeliner and a glittering gold moonstone infused iridescent guerlain ecrin 6 couleurs rue des francs bourgeois 10 offers a range of three different eyeshadow textures in each of its harmonies consisting of 5 eyeshadows and 1 eyeliner it houses an iridescent formula with mother of pearl particles for intense colour radiance a matt finish formula for softness elegance and contras