I had a trip coming up and I wanted to flesh out my existing travel palette from its existing nine colors to twenty. I have several versions of various hues made by different manufactures. I have several tubes of the same color of yellow, Hansa Yellow Medium. How different is that from my more regular Hansa Yellow Light? What would make for a variety of greens, good sky colors, and colorful walls, and flowers in the garden? This is a color chart testing out 19 hues.