var g = 125;

var b = 125;

var txt = ["banana", "apricot"];

var rand;

​

function setup() {

  createCanvas(400, 400);

  rand = txt[Math.floor(random(txt.length))];

}

function draw() {

  r = random(r - 5, r + (5 % 255));

  g = random(g - 5, g + (5 % 255));

  b = random(b - 5, b + (5 % 255));

  background(r, g, b);

  textAlign(CENTER);

  text(rand, 200, 200);

}

​