There's no such thing as being too picky or high-maintenance with makeup. Knowing exactly what you prefer with your makeup is the key to figuring out how to combine colors that look better on your skin, so you will never find yourself looking washed out. For example, if you're someone who prefers to only wear warm colors like a brown smokey eye and a brownish nude lip, you're in a particularly safe zone. An entirely warm-toned look actually has the potential to feel more polished and cohesive than a look mixed with cool tones.
The rule to make it work, as always, is balance. There has to be a balance between the lights and the darks that you use in order to avoid an unflattering and flat look. Like with Juliana Gomez's recent selfie, you can opt for an espresso color for a semi-dramatic eye and then complement it with a peach blush and golden highlighter on the cheeks. For the lips, a brown nude that's a shade or two lighter than your skintone will look best for a subtle pop.