This is one piece, R.  I struggle to find the best light that displays my work as I see it.

 Sun - outdoors, photographed in direct sunlight.

Painting in blue and green R
C. Elisabeth 'R' Sunlight
 

Shade - Outdoors, in the shade and shaded by my shadow.

C.Elisabeth painting blue grren
C.Elisabeth 'R' Shade
 

Natural Light - Taken indoors, next to a window.  Indirect lighting. 

C.Elisabeth R painting blue green
C.Elisabeth 'R' Natural Light