如何着色UIBarButtonItem背景颜色？
问题描述：
我有一个UIToolbar包含2个按钮。工具栏有一个色调：
I have a UIToolbar that contains 2 buttons. The toolbar has a tint:
toolbar.tintColor = [UIColor colorWithRed:(102.0/255.0) green:(20.0/255.0) blue:(11.0/255.0) alpha:1];
如何让按钮有类似的色调？
How can I make the buttons have a similar tint color?