title: UITableViewCell accessoryType set, but accessoryView is nil. How do I set the accessoryView backgroundColor?
body: <p>Here's how my cells are set up:</p>
  
  <pre><code>- (UITableViewCell *)tableView:(UITableView *)tableViewIn cellForRowAtIndexPath:(NSIndexPath *)indexPath {
      static NSString *CellIdentifier = @"subcategory";
      UITableViewCell *cell = [tableViewIn dequeueReusableCellWithIdentifier:CellIdentifier];
      if (cell == nil) {
          cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
      }
      cell.textLabel.text = [[subcategories objectAtIndex:indexPath.row] title];
      cell.textLabel.font = [UIFont boldSystemFontOfSize:16];
      cell.textLabel.font = [UIFont boldSystemFontOfSize:16];
      cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
      cell.selectionStyle = UITableViewCellSelectionStyleGray;
  
      cell.contentView.backgroundColor = [UIColor clearColor];
  
      cell.textLabel.textColor = [UIColor whiteColor];
      cell.textLabel.highlightedTextColor = [UIColor whiteColor];
  
      return cell;
  }    
  </code></pre>
  
  <p>As one can see, I set the background of the <code>contentView</code>, and that works just fine - but when I try to do the same thing with <code>backgroundView</code> or <code>accessoryView</code>, nothing happens because <code>backgroundView</code> and <code>accessoryView</code> both seem to be nil.  </p>
  
  <p>When one sets the <code>accessoryType</code> rather than the <code>accessoryView</code>, how does one then go about setting the background of the accessory?</p>