def triad(clr, angle=<NUM_LIT>):
clr = color(clr)<EOL>colors = colorlist(clr)<EOL>colors.append(clr.rotate_ryb(angle).lighten(<NUM_LIT:0.1>))<EOL>colors.append(clr.rotate_ryb(-angle).lighten(<NUM_LIT:0.1>))<EOL>return colors<EOL>
Returns a triad of colors.

The triad is made up of this color and two other colors
that together make up an equilateral triangle on
the artistic color wheel.