有没有办法为MDCAlertAction的不同MDCActionEmphasis级别设置不同的配色方案？

Question

我在我的快捷应用中使用Material Desing Components library for iOS。

我需要展示一个带有两个动作（ MDCAlertAction ）的Alert Dialog，这两个动作将具有不同的强调值（ MDCActionEmphasis ）。
问题是，有没有办法为每个动作设置不同的配色方案？
这是我想在代码中执行的操作：

// example alert with two actions with different emphasis levels
let alert = MDCAlertController(title: "Test alert", message: "Here are some button types")

let criticalAction = MDCAlertAction(title: "Confirm", emphasis: .high, handler: nil)
let otherAction = MDCAlertAction(title: "Wait", emphasis: .medium, handler: nil)

alert.addAction(criticalAction)
alert.addAction(otherAction)

// scheme i'd like to apply to criticalAction
let redTheme = MDCContainerScheme()
redTheme.colorScheme.primaryColor = .red
// scheme i'd like to apply to otherAction
let blueTheme = MDCContainerSCheme()
blueTheme.colorScheme.primaryColor = .blue

// What i've read in documentation
// this will set theme for both of actions
alert.applyTheme(withScheme: redTheme)

// What i'd like to achieve in some way
criticalAction.    setTheme(redTheme)
otherAction.       setTheme(blueTheme)

如果能找到一种样式设计这些动作的方法，我将不胜感激。预先感谢！