Color-aid paper collages

I love doing paper collages from Color -Aid papers. The pigment is mixed with clay and silkscreened onto a backing, which gives them a rich, matte surface. I do these as studies for paintings, or when I want to generate new ideas. In this one I have 2 greens and 2 purples. Note these are both secondary colors. These colors have blue in common (both mixtures contain blue). The green is acting as  field and the purple is both figure and field. The larger blocks of the red-purple towards the top want to be field. This is not a finished piece, but already the colors are active. The red in the reddish-purple is reacting to the yellow green. The bluish-purple is also reacting to the yellow-green; it's asking it to become it's complement, red-purple. Any color will seek out it's complement. This effect is most pronounced in the isolated little shape near the center.

I like the way the blue shapes at the bottom are corralling the green field. I like the way the reddish-purple is a field at the top, then becoming a line at the left. When you tear the paper in one direction you get a white line. This can be used to your advantage; sometimes you don't want 2 combative colors right next to each other, or maybe you want to create a line moving through a piece. So it can act as an accent or a barrier. Note the white line effects the field around it, not just the color it's attached to.