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function setup() { createCanvas(600, 400);}function draw() { background(220); //if my mouse is in the left column if (mouseX <200) { fill('red'); rect(0,0,200,height); fill('white'); rect(200,0,200,height); fill('white'); rect(400,0,200,height); } if (mouseX>200 && mouseX<400) { fill('white'); rect(0,0,200,height); fill('red'); rect(200,0,200,height); fill('white'); rect(400,0,200,height); } if (mouseX >400 && mouseX<600) { fill('white'); rect(0,0,200,height); fill('white'); rect(200,0,200,height); fill('red'); rect(400,0,200,height); } }