title: Override onClick color / drawable
body: <p>I'm trying to find out, how to override standard onClick color (yellow) for <a href="http://android.git.kernel.org/?p=platform/frameworks/base.git;a=blob;f=core/java/android/widget/Button.java;h=5e692d4fbbe1598ea07f78b736446285564283dc;hb=HEAD" rel="nofollow">Button</a> with orange color?! (<strong><em>during writing this question I've seen, that these are no colors, but images</em></strong>)</p>
  
  <p>Is there the easy way to do that? Or should I write a new style in that case?</p>
  
  <p>I found in GIT, how com.android.internal.R.attr.buttonStyle looks like. And I would like just copy and modify that button style a bit. But if I do it on that way, I get XML-Errors</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;selector&gt;
      &lt;item 
          android:state_window_focused="false" 
          android:state_enabled="true"
          android:drawable="@drawable/btn_default_normal"/&gt;
      &lt;item 
          android:state_window_focused="false" 
          android:state_enabled="false"
          android:drawable="@drawable/btn_default_normal_disable" /&gt;
      &lt;!-- Modified item --&gt;
      &lt;item 
          android:state_pressed="true" 
          android:drawable="@drawable/btn_default_selected" /&gt;
      &lt;item 
          android:state_focused="true" android:state_enabled="true"
          android:drawable="@drawable/btn_default_selected" /&gt;
      &lt;item 
          android:state_enabled="true" 
          android:drawable="@drawable/btn_default_normal" /&gt;
      &lt;item 
          android:state_focused="true"
          android:drawable="@drawable/btn_default_normal_disable_focused" /&gt;
      &lt;item 
          android:drawable="@drawable/btn_default_normal_disable" /&gt;
  &lt;/selector&gt;
  </code></pre>
  
  <p>Ok, I guess, I must fill selector's attribute  xmlns:android. If I fill it with "http://schemas.android.com/apk/res/android", I get other errors. This time, because the android's drawable resources cann't be found.</p>
  
  <p>Any suggestions?!</p>
  
  <p>Thank you,</p>
  
  <p>Mur</p>