From May 26th, 2019 to October 2nd, 2021, 50% user give 4-star rating, 50% user give 2-star rating. for Dark-Themed Chrome File Explorer chrome extension.
Same as other Dark Mode extensions if from "(Right click on extension)>Manage extension...>Allow access to file URLs" is activated.
With little more design, I might even start using chrome as my file browser!!! Don't forget to allow access to file URLs