He is studying about orpiment, which was used in ancient artworks.

This old medicine box contains realgar, a rare medicine.

This old medicine box contains realgar, a rare medicine.

His dog has yellowish-brown fur.

This piece of art is painted using orpiment.

This old document uses the rare ocher characters.

He is suffering from macular degeneration.

In this cake recipe, we use three yolks.

In this recipe, we use two yolks.

I love fried yellow chicken.