I think everyone can find their nude lip colour. Although the definition of nude should be as expansion to include mlbb, pinky, brown tones to (what we call) concealer lips. I am C35 and I don't look good in your white/beige nude lips. I look best in pink-browns such as cosmo and revlon nude velvet.
In addition the trick with nude lips is make sure you have a FULL FACE of makeup on. For many nude lips does not work if you don't make the rest of your face look smooth and flawless, most specifically the complexion - because it can draw out the flaws easier since you are actually choosing a lips colour that "blends in"/compliments your complexion. Also the eye's need to be more striking and take center stage from a blank but flawless canvas.