created proper drawable icons for speaker

app/src/main/kotlin/com/tutpro/baresip/MainActivity.kt

@@ -308,9 +308,10 @@ class MainActivity : AppCompatActivity() {
                 am.isSpeakerphoneOn = !am.isSpeakerphoneOn
                 val speakerIcon = findViewById(R.id.speakerIcon) as ActionMenuItemView
                 if (am.isSpeakerphoneOn)
-                    speakerIcon.setBackgroundColor(Color.RED)
                     // speakerIcon.setIcon(ContextCompat.getDrawable(this, R.drawable.speaker_on))
+                    speakerIcon.setBackgroundColor(Color.rgb(0x04,0xb4, 0x04))
                 else
+                    // speakerIcon.setBackgroundColor(resources.getColor(R.color.colorPrimary, applicationContext.theme))
                     speakerIcon.setBackgroundColor(resources.getColor(R.color.colorPrimary))
                 return true
             }

app/src/main/res/menu/speaker_icon.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8"?>
+<menu xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
+
+    <item
+        android:id="@+id/speakerIcon"
+        android:title=""
+        app:showAsAction="always"
+        android:icon="@drawable/ic_action_speaker"
+        />
+
+</menu>