@Test
public void testEquals() {

    LOG.info("testEquals");
    final ColorRGB8 s = y.withR(x1).withG(x2).withB(x3);
    final ColorRGB8 t = x.withR(y1).withG(y2).withB(y3);
    Assert.assertTrue(x.equals(s));
    Assert.assertTrue(y.equals(t));
    Assert.assertFalse(x.equals(t));
    Assert.assertFalse(y.equals(s));
}