message: cargo_generate_lockfile: flip Updating and Adding colors
  Updating is green elsewhere and is more common as well.
diff: @@ -96,13 +96,13 @@ pub fn update_lockfile(ws: &Workspace, opts: &UpdateOptions)
  } else {
  format!("{} -> v{}", removed[0], added[0].version())
  };
  - print_change("Updating", msg, Cyan)?;
  + print_change("Updating", msg, Green)?;
  } else {
  for package in removed.iter() {
  print_change("Removing", format!("{}", package), Red)?;
  }
  for package in added.iter() {
  - print_change("Adding", format!("{}", package), Green)?;
  + print_change("Adding", format!("{}", package), Cyan)?;
  }
  }
  }
  