Guerlain Ecrin 4 Couleurs Les Tendres Each harmony of Ecrin 4 Couleurs eye shadow is composed of four different and specially selected textures to allow you to mix and match for endless combinations. The newest harmony, Les Tendres, draws inspiration from the season: iridescent ivory, satiny nude, and matte violet-plum shades express an ode to nature and renewal, while a metallic aquatic green adds vibrancy.