stroke();Set the stroke color for shapes
stroke(r, g, b);Arguments
rThe red bytegThe green bytebThe blue byte stroke(255, 255, 100);stroke(r, g, b, a);Arguments
rThe red bytegThe green bytebThe blue byteaThe alpha byte stroke(255, 255, 100, 150);stroke(v);Arguments
vThe grayscale value stroke(255);stroke(color_name);Arguments
color_nameThe color name stroke('red');