diff --git a/app/src/main/res/values/colors.xml b/app/src/main/res/values/colors.xml
index 30455d0b..aaf8bfd0 100644
--- a/app/src/main/res/values/colors.xml
+++ b/app/src/main/res/values/colors.xml
@@ -11,4 +11,5 @@
     <color name="colorAccent">#b00020</color>
     <color name="colorBaresip">#0ca1fd</color>
     <color name="colorWhite">#ffffff</color>
+    <color name="colorGreen">#01df01</color>
 </resources>
diff --git a/app/src/main/res/values/styles.xml b/app/src/main/res/values/styles.xml
index 545b9c6d..2eb9fa46 100644
--- a/app/src/main/res/values/styles.xml
+++ b/app/src/main/res/values/styles.xml
@@ -1,8 +1,7 @@
 <resources>
 
-    <!-- Base application theme. -->
+    <!-- Base application theme -->
     <style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
-        <!-- Customize your theme here. -->
         <item name="colorPrimary">@color/colorPrimary</item>
         <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
         <item name="colorAccent">@color/colorAccent</item>
@@ -17,4 +16,16 @@
 
     <style name="AppTheme.PopupOverlay" parent="ThemeOverlay.AppCompat.Light" />
 
+    <!-- Alert dialog theme -->
+    <style name="AlertDialogTheme" parent="ThemeOverlay.AppCompat.Dialog.Alert">
+        <item name="buttonBarPositiveButtonStyle">@style/PositiveButtonStyle</item>
+        <item name="buttonBarNegativeButtonStyle">@style/NegativeButtonStyle</item>
+    </style>
+    <style name="PositiveButtonStyle" parent="Widget.AppCompat.Button.ButtonBar.AlertDialog">
+        <item name="android:textColor">@color/colorGreen</item>
+    </style>
+    <style name="NegativeButtonStyle" parent="Widget.AppCompat.Button.ButtonBar.AlertDialog">
+      <item name="android:textColor">@color/colorAccent</item>
+    </style>
+
 </resources>