Regarding color: without pressing it is covering the pencil glides on the sheet.
The grip is perfect because the pen is cylindrical and not hexagonal. And mine is unbreakable, for me this is an important detail.
And one can dilute the color to fully melt with a solvent (gasoline odor, found in paint radius oil) and fades (sold in the same place).
Not crayons to give to children, youth with rigor the soul of artists!