Dominant complements of red and green are tied together with high key (light value) complements of yellow and purple.
Using watercolor and ink together allows for things to happen on their own. Colors can bleed into one another, blurring edges beautifully and mixing to just the right color to allow a sketch to come to life. The red watercolor mixed with the Blue Nose Bear ink to produce a wonderful, subtle (and pale) purple suggesting a slightly shadowed lower face and neck. It did not bleed enough to reach the cheek and side of the forehead, nor the tip of the ear. Here, the yellow suggests a bit of light hitting the face.
Sketch: Drawn first with dip pen using Noodler’s Blue Nose Bear ink, followed by watercolor squeezed from a tube.