text: 
  function setup() {
  
    createCanvas(400, 400);
  
  }
  
  function draw() {
  
    	let time = millis();
    	let freq = 0.0008;
  
  	let sinR = sin( time * freq + 0.1 );
  	let sinG = sin( time * freq + 0.3 );
  	let sinB = sin( time * freq + 0.2 );
  
    	let redValue = map( sinR, -1, 1, 0, 255 );
    	let greenValue = map( sinG, -1, 1, 0, 255 );
    	let blueValue = map( sinB, -1, 1, 0, 255 );
  
    	let col = color( redValue, greenValue, blueValue );
  
    	background( col );
  
  
    // alot of times, I will just write it like this
  
    // let redValue =  127 + 127 * sin( time * freq + 0.1 );
  
  }
  