Her ring was made of purple quartz.

She was wearing a purple quartz necklace.

I have visited the Forbidden City in Beijing.

Ultraviolet rays can have a negative impact on the skin.

The fact that he likes that movie is truly a case of 'there's no accounting for taste'.

The red clover flowers bloom beautifully in spring.

Her dress was a vivid lemon color, standing out.

She was fascinated by the color of the flowers.

Her colourful dress stood out at the party.

Chameleons can change their camouflage color to match their surroundings.