[Android] Fix initial mini player background color

[Geoffrey Métais]

vlc-android | branch: 3.0.x | Geoffrey Métais <geoffrey.metais at gmail.com> | Thu Jun 14 14:49:22 2018 +0200| [4e77ab066a2d61c58baba402505ec4e891cad25a] | committer: Geoffrey Métais

Fix initial mini player background color

(cherry picked from commit 3b370d9b26618b658c609f611928c16ce83c6d6a)

> https://code.videolan.org/videolan/vlc-android/commit/4e77ab066a2d61c58baba402505ec4e891cad25a
---

 vlc-android/res/layout/audio_player.xml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/vlc-android/res/layout/audio_player.xml b/vlc-android/res/layout/audio_player.xml
index 20bef4345..239e723f1 100644
--- a/vlc-android/res/layout/audio_player.xml
+++ b/vlc-android/res/layout/audio_player.xml
@@ -55,7 +55,7 @@
             android:gravity="center_vertical"
             android:orientation="horizontal"
             android:fitsSystemWindows="true"
-            android:background="?attr/background_default"
+            android:background="?attr/background_default_darker"
             tools:layout_constraintRight_creator="1"
             tools:layout_constraintLeft_creator="1">