this.clearPen();

this.stamp();

this.penDown = true;

this.penDown = false;

// rgb:
this.penColor = Color.rgb(77, 151, 255);

// rgba:
this.penColor = Color.rgb(77, 151, 255, 0.5);

// hsv (hue from 0 to 100):
this.penColor = Color.hsv(60, 70, 100);

// hsva (hue from 0 to 100):
this.penColor = Color.hsv(60, 70, 100, 0.5);

this.penColor.h += 10;

this.penColor.s += 10;

this.penColor.v += 10;

this.penColor.a -= 0.1;

this.penColor.h = 10;

this.penColor.s = 10;

this.penColor.v = 10;

this.penColor.a = 0.9;

this.penSize += 10;

this.penSize = 50;