Multi color brush strokes add to the richness of this painting.
Create multiple colors in your brush strokes by:
1) varying hue, saturation and value (HSV),
2) select color from a gradient or,
3) select color from an entire color set.
I am sure you will enjoy creating more colorful and expressive brush strokes. The set of brushes I referred to are called Desert Oasis. They are watercolor brushes and would have to be converted to “cover” if they are to be used as a non watercolor variant. They can be found at Skip Allen Paints Blog along with many other brush sets he makes available for free.