public static void blockChanger() {
                        Random random2 = new Random();
                        Block block = blocks.get(random2.nextInt(blocks.size()));
                        Random random = new Random();
                        byte randomColor = (byte) random.nextInt(16);
                        if(randomColor == 0 || randomColor == 7 || randomColor == 8 || randomColor == 12 || randomColor == 15){
                            blockChanger();
                            return;
                            }else
                        block.setData(randomColor);

        }