Before we talk about color, let’s talk about watercolor boxes. On the market, there is a wide variety of watercolor boxes, empty or full, of different brands and sizes, plastic and metal. There really is something for everyone.
You can find empty watercolor boxes, which you can fill with the colors that you like, and boxes from different brands, such as Windsor&Newton or Schmincke, among many others, which already come with an assortment of colors of very respectable quality and reasonable price. Good option for beginners.
In this case, you can use the colors offered by the brand, or you can also change some colors for others, and thus begin to personalize your box.
For example, since I don’t use Black, I removed it and replace it with another color which was not in the box.
Although they weigh more, I prefer the metal boxes, because they are solid, inside you can easily organize and fix the watercolor godets, and on the back they have a ring to hold them while you paint.
I have a few different boxes of watercolors, but I mainly use two “pocket” boxes, a larger one, with a wide variety of colors, and a smaller one, with a reduced range of colors, the essentials when I want to take little material to go out to draw.