How can I change the color of arrows that appear when I am editing text

You can accomplish this by using a custom theme and setting the following:

xml

<item name="android:textSelectHandle">@drawable/text_select_handle_middle</item>
<item name="android:textSelectHandleLeft">@drawable/text_select_handle_left</item>
<item name="android:textSelectHandleRight">@drawable/text_select_handle_right</item>

Or, you can use reflection:

java

try {
    final Field fEditor = TextView.class.getDeclaredField("mEditor");
    fEditor.setAccessible(true);
    final Object editor = fEditor.get(editText);

    final Field fSelectHandleLeft = editor.getClass().getDeclaredField("mSelectHandleLeft");
    final Field fSelectHandleRight =
        editor.getClass().getDeclaredField("mSelectHandleRight");
    final Field fSelectHandleCenter =
        editor.getClass().getDeclaredField("mSelectHandleCenter");

    fSelectHandleLeft.setAccessible(true);
    fSelectHandleRight.setAccessible(true);
    fSelectHandleCenter.setAccessible(true);

    final Resources res = context.getResources();

    fSelectHandleLeft.set(editor, res.getDrawable(R.drawable.text_select_handle_left));
    fSelectHandleRight.set(editor, res.getDrawable(R.drawable.text_select_handle_right));
    fSelectHandleCenter.set(editor, res.getDrawable(R.drawable.text_select_handle_middle));
} catch (final Exception ignored) {
}