This painting was done using water based oil paints by Winsor Newton. I bought them because I paint with a group of women every Thursday. We call ourselves the "Thursday Painters" , not very original, but that's who we are. Anyway, I figured using the water based oils would be easier to cart with me since I wouldn't need a solvent; and they would be less offensive to my fellow painters that don't work in oils. Well, I really am having a hard time using them. They just don't have the lovely buttery consistency of oils. They are very stiff in application, take longer to dry then traditional oil paint and the longer they sit out exposed to the air the more difficult to work with.