Neither blue nor green pigments are ever present in the human iris or fluid.

By the end of the 19th century, it virtually replaced the older green pigments based on copper carbonate.

These representations are depicted in natural pigment white, blue, green, and red.

The color of the frog is caused by blue and green pigments covered in a yellow layer.

When there's no light, the plant stops producing this green pigment and their leaves go yellow.

It was used as a bright green pigment.

Less frequent allergic reactions to black, purple, and green pigments have also been noted.

The ancient Romans used one of them, possibly conichalcite, as a green pigment.

Two things occurred to him as he watched the dark green pigment soak into his work boot.

Verdigris fell out of use by artists as more stable green pigments became available.