createCanvas(275, 200);

  background(255);

  const buttonSchwarz = createButton("Schwarz");

  buttonSchwarz.position(25, 75);

  buttonSchwarz.size(100, 50);

  buttonSchwarz.mousePressed(() => background(0));

  const buttonWeiss = createButton("Weiß");

  buttonWeiss.position(150, 75);

  buttonWeiss.size(100, 50);

  buttonWeiss.mousePressed(() => background(255));

}