Android - change send icon's color on ImageButton

Add tint attribute and you can set any color you want. Also you can set android:tintMode attribute (Which says how the color should apply).

 <ImageButton
        android:id="@+id/ImageButton1"
        android:layout_width="64dp"
        android:layout_height="64dp"
        android:adjustViewBounds="true"
        android:background="@null"
        android:gravity="right"
        android:paddingTop="5dip"
        android:scaleType="center"
        android:tint="@color/colorAccent"
        android:src="@android:drawable/ic_menu_send" />

You can use colorFilter on image view and can give any color runtime.

iv.setColorFilter(getResources().getColor(R.color.color_gray),
                PorterDuff.Mode.SRC_ATOP);

Add android:tint attribute to set the icon colour.

<ImageButton
    android:id="@+id/ImageButton1"
    android:layout_width="0dp"
    android:paddingTop="5dip"
    android:layout_weight="1"
    android:tint="@color/background_red"
    android:layout_height="wrap_content"
    android:adjustViewBounds="true"
    android:background="@null"
    android:gravity="right"
    android:scaleType="center"
    android:src="@android:drawable/ic_menu_send" />