When contemplating the selection of an appropriate lip liner color, one might wonder, what factors should be meticulously considered to ensure the ideal match with my chosen lipstick? Is it imperative to find a color that closely mirrors the hue of the lipstick, or could a slightly darker or lighter shade create a more captivating contrast? Furthermore, how do the undertones of the lip liner interact with those of the lipstick? Should I opt for a warm, earthy tone or a cool, vibrant shade that complements my complexion? Moreover, are there particular textures or formulas that should be prioritized to enhance the overall aesthetic? With an array of choices available, do I also need to take into account the occasion for which I am applying the makeup? Could the setting, be it casual or formal, influence my decision in selecting the perfect lip liner color? How can I ensure cohesion in my overall look while embracing creativity?