How to change Options menu dots color for the theme "Theme.AppCompat.Light.NoActionBar"

The easiest way of doing it is by adding

<item name="popupTheme">@style/ThemeOverlay.AppCompat.Light</item>

or

<item name="popupTheme">@style/ThemeOverlay.AppCompat.Dark</item>

to your primary Theme in order to change it to light or dark.

EDIT: In order to add any color for the overflow icon you would have to override the actionOverflowButtonStyle like so:

<style name="Theme.MyAppTheme" parent="Theme.AppCompat.NoActionBar">
    <item name="actionOverflowButtonStyle">@style/OverFlow</item>
  </style>

  <style name="OverFlow" parent="@style/Widget.AppCompat.Light.ActionButton.Overflow">
    <item name="android:src">@drawable/ic_overflow_icon</item>
  </style>

You can easily create your own overflow icon from websites like Android Asset Studio

2019 - Easiest way to do is write the below code to your xml in toolbar code or where you want.

android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"

please give up vote if its work.