var drawPalette = function(){ noStroke(); colorMode(HSB); for(var i = 0; i < 10; i++){ fill(i * 24, 255, 255); ellipse(4 + i * 39, 100, 40, 40); } }; var displayColour = function(){ fill(get(mouseX, mouseY)); rect(150, 200, 100, 100); }; var draw = function() { background(255, 0, 0); drawPalette(); displayColour(); };