Why are some translations in grey?
 - ¿Por qué algunas traducciones se ven grises?
Although he's young, he has a grey beard.
 - Aunque es joven, tiene la barba gris.
Her hair became gray with the years.
 - Con el paso de los años su cabello se volvió gris.
His suit was gray and his tie was yellow.
 - Su traje era gris y su corbata, amarilla.