Encontre este post en XDA y espero que le sirva
(copy/paste)
Transparent Status Bar! Based on Raubkatze's discovery i have found a way to implement this on the 4.2.1 leak
As you'll see there's no tw_super_status_bar.xml, so i've made the same modifications to another file.
1. Decompile SystemUI.apk
2. Open /SystemUI/res/layout/super_status_bar.xml and change android:background to 100% transparent.
Code:
<?xml version="1.0" encoding="utf-8"?><com.android.systemui.statusbar.phone.StatusBarWindowView android:background="#00000000" android:focusable="true" android:fitsSystemWindows="true" android:descendantFocusability="afterDescendants" xmlns:android="http://schemas.android.com/apk/res/android"</pre>
3. Save and close the file.
4. Open /SystemUI/res/values/drawables.xml and edit this line to get transparency you need, for example, 100% transparent:
Code:
<item type="drawable" name="status_bar_background">#00000000</item></pre>
5. Save and Close
6. Recompile SystemUI.apk
** For signing of system apps, open original app and recompiled app through 7 zip and Drag and Drop META-INF and AndroidManifest.xml from original to recompiled.**