SimpleImage compImg = brickImg;
if (Tools.drand() >= rprob) {
int bRed = (int) (redVariance - Tools.drand() * 2 * redVariance + 0.5);
int bGreen = (int) (greenVariance - Tools.drand() * 2 * greenVariance + 0.5);
int bBlue = (int) (blueVariance - Tools.drand() * 2 * blueVariance + 0.5);
compImg = compImg.clone();
BalancingTransformer bT = new BalancingTransformer();
bT.setRed(bRed);
bT.setGreen(bGreen);
bT.setBlue(bBlue);
bT.transformImage(compImg);