If you’re using Read&Write for Windows in the workplace you can use the Read&Write for Work toolbar.
To get this toolbar:-
Make sure you are using Read&Write 12.0.71 or above. You can check your version in Read&Write Settings > About Read&Write.
If you're on an earlier version of Read&Write, click on the Check for updates link in About Read&Write. You may need Administrator permissions to install updates.
Go to Read&Write settings > General.
Switch on the option for Show new toolbar.
Your toolbar will then change. In Read&Write Settings General, there is also the option to select the dark theme of the Read&Write for Work toolbar.