Review changes.

Author: ajsecord

components/Buttons/src/MDCButton.m

@@ -44,6 +44,8 @@
 
 // http://www.google.com/design/spec/components/buttons.html#buttons-main-buttons
 static const CGFloat MDCButtonDisabledAlpha = 0.1f;
+
+// Blue 500 from http://www.google.com/design/spec/style/color.html#color-color-palette .
 static const uint32_t MDCButtonDefaultBackgroundColor = 0x2196F3;
 
 // Checks whether the provided floating point number is exactly zero.

components/Ink/src/MDCInkTouchController.m

@@ -66,7 +66,7 @@ - (instancetype)initWithView:(UIView *)view {
     [_view addGestureRecognizer:_gestureRecognizer];
 
     _defaultInkView = [[MDCInkView alloc] initWithFrame:view.bounds];
-    //    _defaultInkView.inkColor = [UIColor colorWithWhite:224.0f / 255.0f alpha:0.25f];
+    _defaultInkView.inkColor = [UIColor colorWithWhite:224.0f / 255.0f alpha:0.25f];
     _defaultInkView.autoresizingMask =
         UIViewAutoresizingFlexibleHeight | UIViewAutoresizingFlexibleWidth;
   }