title: Footer view's color always darker than UITableView separator's color
body: <p>In my UITableView, I set the separator color like this: </p>
  
  <pre><code>- (void)viewDidLoad {
    ...
    self.tableView.separatorColor = [UIColor lightGrayColor];
    ...
  }
  </code></pre>
  
  <p>And I set the color of the footer like this: </p>
  
  <pre><code>- (UIView *)tableView:(UITableView *)tableView viewForFooterInSection:(NSInteger)section {
  
    UITableViewHeaderFooterView *footerView = [[UITableViewHeaderFooterView alloc]
                                               initWithFrame:(CGRect){0, 0, 320, 1}];
    footerView.contentView.backgroundColor = [UIColor lightGrayColor];
  
    return footerView;
  }
  </code></pre>
  
  <p>However, the footer view's color is always darker than the separator's color, like this:</p>
  
  <p><img src="https://i.stack.imgur.com/Q6WVO.png" alt="enter image description here"></p>
  
  <p>How do I get them to be the exact same color? Thanks.</p>