public void testRun() {

    int delay = 2000;

    // Wait for activity: 'com.example.ignaciogiagante.modernartui.MainActivity'
    solo.waitForActivity(com.example.ignaciogiagante.modernartui.MainActivity.class, delay);

    // Wait for view: 'R.id.seekbar'
    assertTrue("progressBar not found", solo.waitForView(R.id.seekbar));

    View view = solo.getCurrentActivity().findViewById(R.id.first_vertical);
    ColorDrawable colorDrawable = (ColorDrawable) view.getBackground();

    SeekBar seekBar = (SeekBar) solo.getCurrentActivity().findViewById(R.id.seekbar);

    // Check color with progress bar position 0
    solo.setProgressBar(seekBar, 0);
    solo.sleep(delay);
    int intColor = colorDrawable.getColor();
    String strColor = String.format("#%06X", 0xFFFFFF & intColor);
    assertEquals("#6A77B7", strColor);

    // Check color with progress bar position 51
    solo.setProgressBar(seekBar, 51);
    solo.sleep(delay);
    intColor = colorDrawable.getColor();
    strColor = String.format("#%06X", 0xFFFFFF & intColor);
    assertEquals("#78B2C6", strColor);

    // Check color with progress bar position 102
    solo.setProgressBar(seekBar, 102);
    solo.sleep(delay);
    intColor = colorDrawable.getColor();
    strColor = String.format("#%06X", 0xFFFFFF & intColor);
    assertEquals("#86D4BC", strColor);

    // Check color with progress bar position 153
    solo.setProgressBar(seekBar, 153);
    solo.sleep(delay);
    intColor = colorDrawable.getColor();
    strColor = String.format("#%06X", 0xFFFFFF & intColor);
    assertEquals("#96E3A1", strColor);

    // Check color with progress bar position 204
    solo.setProgressBar(seekBar, 204);
    solo.sleep(delay);
    intColor = colorDrawable.getColor();
    strColor = String.format("#%06X", 0xFFFFFF & intColor);
    assertEquals("#C7F1A6", strColor);

    // Check color with progress bar position 255
    solo.setProgressBar(seekBar, 255);
    solo.sleep(delay);
    intColor = colorDrawable.getColor();
    strColor = String.format("#%06X", 0xFFFFFF & intColor);
    assertEquals("#FFFFB7", strColor);
  }