Experimenting with acrylic paint

Acrylic on canvas 40 x 50 cm.
The first is with natural pigments in an acrylic binder the second is just with chemical colours.
I like the translucency and you can work fast.
But with the natural pigments and egg yolk I have the feeling the paintng is much more alive in itself. With the acrylic it easily becomes like a printed image, the image becomes more important then the being of the work. I will probably go back to the tempera technque.