This desaturates the colors wherever you drag the mouse. (Do it to the same spot many times, and it will eventually become greyscale.)
This tool offers both freehand and one-click operation.
This tool offers multiple size settings.
Voir aussi : Saturer, Assombrir, Éclaircir, Teinter, Enlever une couleur, & Garder une couleur.
Tux Paint 0.9.31