In the first few days of baby's life, there may be a pink or reddish tinge in baby's wet diaper. (cindyandjana.com)
Astronomers have long wondered why giant elliptical galaxies stop forming stars, becoming dominated over time with small, long - lived stars with a distinctive reddish tinge. (space.com)
Pink eye is aptly named for the pink or reddish tinge of a person's eye or eyes when they have this condition. (health.com)