Probably 1927. The mid-1920's was when she began to be noticed a lot.
Source:
http://artpassions.com/art/1044-Floral-Art/0000013098-Georgia-OKeeffe-Yellow-Calla-Green-Leaves.html
Leaves That Are Green was created in 1965.
Green Leaves was created in 1838.
Flowers are mainly red, yellow, orange. Some pink and salmon. leaves can be green or red/orange striped. I know violet, white too.
When green is mixed with yellow, the color created is typically a shade of yellow-green.
Some are. They are usually green or a yellowish-green.
The two types are the green and yellow leaves
Green leaves, white petals with yellow centers
When The Green Leaves Turn To Gold was created in 1914.
Jamaican Green-and-yellow Macaw was created in 1847.
Dominican Green-and-yellow Macaw was created in 1908.
Because - lack of sunlight prevents the leaves from making chlorophyll - the chemical that turns leaves green.
When a banana begins to ripen, the peel begins to change color. It changes from green to yellow to brown. The same occurs with autumn leaves. The green leaves change from green to red and yellow and orange and eventually brown.