Summarize:

Using red fruit to give your lips a natural stain results in a pretty deep pink or red color. The deeper the fruit color, the darker your stain will be. Try the following different types of fruit to create the perfect stain:  Cherries Cranberries Raspberries Pomegranate seeds Strawberries Beets (not technically fruit, but they work just as well) A natural fruit stain will fade away within a few hours. If you want to keep your lips red all day, keep some fruit with you so you can reapply color as necessary.
Choose bright red fruit. Reapply throughout the day.