Its there.. it isn't there. That's nude lipstick for you.
One of the rules of makeup is to never have bold colors on both eye and lip. In other words, when you want to highlight your eyes, keep the lipstick simple and when you wear bold lipstick, keep the eye makeup simple. If you go bold both ways , you will end up looking liek a horror movie character.
Nude lipstick is perfect to wear when you have bold eyes or bold eye color. Perfect for daily wear. it looks subtle and nice.
Here is a bollywood actress Nauheed sporting nude lipstick.