Best Strategy to Modify CSS

When facing a lot of overrides, I like to dequeue the plugin stylesheet entirely and style up as needed. Much cleaner and no risk of losing changes to a plugin update.

function my_dequeue_styles()
{
  wp_dequeue_style( 'gctstyles' );
}
add_action( 'wp_enqueue_scripts', 'my_dequeue_styles', 99 );