Added missing comments

Sources/iOS/BottomNavigationController.swift

@@ -171,6 +171,10 @@ open class BottomNavigationController: UITabBarController, Themeable {
     applyCurrentTheme()
   }
   
+  /**
+   Applies the given theme.
+   - Parameter theme: A Theme.
+   */
   open func apply(theme: Theme) {
     tabBar.tintColor = theme.secondary
     tabBar.barTintColor = theme.background

Sources/iOS/Button.swift

@@ -285,7 +285,7 @@ open class Button: UIButton, Pulseable, PulseableLayer, Themeable {
   }
   
   /**
-   Applies given theme to the view.
+   Applies the given theme.
    - Parameter theme: A Theme.
    */
   open func apply(theme: Theme) { }

Sources/iOS/Editor.swift

@@ -190,6 +190,10 @@ open class Editor: View, Themeable {
     layoutBottomLabel(label: detailLabel, verticalOffset: detailVerticalOffset)
   }
   
+  /**
+   Applies the given theme.
+   - Parameter theme: A Theme.
+   */
   open func apply(theme: Theme) {
     placeholderActiveColor = theme.secondary
     placeholderNormalColor = theme.onSurface.withAlphaComponent(0.38)

Sources/iOS/Material+UIColor.swift

@@ -99,7 +99,11 @@ internal extension UIColor {
     return UIColor(red: newR, green: newG, blue: newB, alpha: newA)
   }
   
-  
+  /**
+   Adjusts brightness of the color by given value.
+   - Parameter by value: A CGFloat value.
+   - Returns: Adjusted color.
+   */
   func adjustingBrightness(by value: CGFloat) -> UIColor {
     var h: CGFloat = 0
     var s: CGFloat = 0
@@ -111,11 +115,13 @@ internal extension UIColor {
     return UIColor(hue: h, saturation: s, brightness: (b + value).clamp(0, 1), alpha: 1)
   }
   
+  /// A lighter version of the color.
   var lighter: UIColor {
-    return adjustingBrightness(by: 0.05)
+    return adjustingBrightness(by: 0.1)
   }
   
+  /// A darker version of the color.
   var darker: UIColor {
-    return adjustingBrightness(by: -0.05)
+    return adjustingBrightness(by: -0.1)
   }
 }

Sources/iOS/NavigationBar.swift

@@ -171,6 +171,10 @@ open class NavigationBar: UINavigationBar, Themeable {
     applyCurrentTheme()
   }
   
+  /**
+   Applies the given theme.
+   - Parameter theme: A Theme.
+   */
   open func apply(theme: Theme) {
     backgroundColor = theme.primary
     items?.forEach {
@@ -178,6 +182,11 @@ open class NavigationBar: UINavigationBar, Themeable {
     }
   }
   
+  /**
+   Applies the given theme to the navigation item.
+   - Parameter theme: A Theme.
+   - Parameter to item: A UINavigationItem.
+   */
   private func apply(theme: Theme, to item: UINavigationItem) {
     Theme.apply(theme: theme, to: item.toolbar)
     item.toolbar.backgroundColor = .clear

Sources/iOS/Switch.swift

@@ -327,6 +327,10 @@ open class Switch: UIControl, Themeable {
     applyCurrentTheme()
   }
   
+  /**
+   Applies the given theme.
+   - Parameter theme: A Theme.
+   */
   open func apply(theme: Theme) {
     buttonOnColor = theme.secondary
     trackOnColor = theme.secondary.withAlphaComponent(0.60)

Sources/iOS/TextField.swift

@@ -462,6 +462,10 @@ open class TextField: UITextField, Themeable {
     applyCurrentTheme()
   }
   
+  /**
+   Applies the given theme.
+   - Parameter theme: A Theme.
+   */
   open func apply(theme: Theme) {
     placeholderActiveColor = theme.secondary
     placeholderNormalColor = theme.onSurface.withAlphaComponent(0.38)

Sources/iOS/TextView.swift

@@ -356,6 +356,10 @@ open class TextView: UITextView, Themeable {
     fixTypingFont()
   }
   
+  /**
+   Applies the given theme.
+   - Parameter theme: A Theme.
+   */
   open func apply(theme: Theme) {
     textColor = theme.onSurface.withAlphaComponent(0.87)
     placeholderColor = theme.onSurface.withAlphaComponent(0.38)

Sources/iOS/Toolbar.swift

@@ -147,6 +147,10 @@ open class Toolbar: Bar, Themeable {
     prepareDetailLabel()
   }
   
+  /**
+   Applies the given theme.
+   - Parameter theme: A Theme.
+   */
   open func apply(theme: Theme) {
     backgroundColor = theme.primary
     (leftViews + rightViews + centerViews).forEach {