DFBColorAdjustment  current = { 0, 0, 0, 0, 0 };
    layer->GetColorAdjustment( layer, &current );
    printf("%d %d %d %d\n",current.brightness,current.contrast,current.saturation,current.hue);
    current.contrast = -375;
    current.brightness = -375;
    layer->SetColorAdjustment(layer, &current );
    layer->GetColorAdjustment( layer, &current );
    printf("%d %d %d %d\n",current.brightness,current.contrast,current.saturation,current.hue);