I've used water-soluble Faber-Carlton and ordinary Faber-Carlton ... which is easy to color ... and the color is good. ..
There are many colors. There are retail ones. That is, you can choose your own color at will. It won't be too expensive. Our water solubility 1.5. General 1. ..
You can also buy cartons. But if you like collecting, uh, iron boxes. I usually buy them in retail. Pick your favorite color.
Ps: There is no difference between a paper box and an iron box.
Please adopt ~