message: Remove explicit default color in call to renderer.clearScreen()
diff: @@ -304,7 +304,7 @@ NAS2D::State* MainMenuState::update()
  {
  auto& renderer = Utility<Renderer>::get();
  - renderer.clearScreen(0, 0, 0);
  + renderer.clearScreen();
  renderer.drawImage(mBgImage, renderer.center() - mBgImage.size() / 2);
  