our color square where the top left is green, the top right is fuchsia, the bottom left is yellow, and the bottom right is blue. You should see no red.</p>
    <svg>
        <defs>
            <pattern id="coloredBoxes" patternUnits="userSpaceOnUse" x="0" y="0" width="200" height="200">
                <rect x="0" y="0" width="100" height="100" fill="blue"/>
                <rect x="100" y="0" width="100" height="100" fill="yellow"/>
                <rect x="0" y="100" width="100" height="100" fill="fuchsia