These are from scans of the back side of marker drawings, which bled through the sketch book paper. I love the effect. Then I manipulated in photoshop.
Here's another version of the one with the green pin-wheel. It looks like it was painted in watercolor. I figured out how to use the lasso tool to outline one of the white areas behind the four dots. Then I painted the area yellow with the brush. Then I cut and pasted the shape so the white and yellow areas alternated. I re-applied the dots to the yellow areas using cut and paste also. Then I rotated a square area (using the square brush selection tool) in the center to get that ribbon candy shape.