更改滑动到删除按钮的背景颜色

Question

我想更改滑动到删除按钮的背景颜色以清除颜色。我尝试了以下代码，但无济于事：

UIView* myBackgroundView = [[UIView alloc] initWithFrame:CGRectZero];
myBackgroundView.backgroundColor = [UIColor clearColor];
cell.editingAccessoryView = myBackgroundView;

cell.backgroundView = [[UIView alloc] initWithFrame:CGRectZero];
cell.backgroundView.backgroundColor = [UIColor clearColor]; 

有什么想法吗？