title: Default notification background color
body: <p>I have a custom notification that uses a <code>LinearLayout</code> that contains an <code>ImageView</code> and a <code>TextView</code>.  Before Android 4.0 all I needed to do was swap out the text colors with the <code>EventContent</code> and <code>EventContent.Title</code> styles and all the colors looked great.</p>
  
  <p>But on Android 4.0 (Ice Cream Sandwich) my custom notification background color is a light gray, and to make matters worse it clashes horribly with the default text styles.  This is strange to me, since all the other notifications have a dark-gray (almost black) color, and I haven't changed the background color at all in my layout.</p>
  
  <p>Is there a way to access the default background color for notifications?  I don't want to manually set this to black (or another color) since I want it to go well with the theme on the device.  But I've looked around and can't find anything that gives me that color.</p>