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function setup() {
createCanvas(600, 600);
}
function draw() {
background(220);
noStroke();
for (var row = 0; row < width; row += 5) {
for (var col = 0; col < height; col += 5) {
var gray = 255 * noise(row / 100, col / 100);
if (gray < 100) {
gray = color(220, 160, 70);
} else {
gray = color(100, 130, 255);
}
fill(gray);
rect(row, col, 5, 5);
}
}
}