My palette is one of nine featured in the article. I find it fascinating to see the colors others use.
In fact they cropped out the other half of my palette. Below what you see here is a large mixing area. It closes and seals the paint in, keeping it moist. I did discover the disadvantage of this while on vacation. If you store it upside down, the moist paints make a real mess. I'm sure you can still see the permanent orange and cobalt blue that I scraped out along the Tiber in Rome.