How to set the color of the Win10 photo viewer?

Win10 Microsoft wants to replace the old version of the Windows Photo Viewer with the Modern version of the Photo Viewer, and by default the user cannot set the traditional photo viewer as the default program. But no doubt many users are still accustomed to using the latter. The script house shared the method of setting the photo viewer to the default application by modifying the registry. For details, please refer to the "Win10 official version how to restore the default photo viewer by opening the image? 》.
The traditional Windows Photo Viewer only provides a background color by default. Have you ever thought about replacing it with other colors? For example, if you change to the same black color as the Photo app, it will not look dazzling. Let's take everyone to implement.
• First press Win+R to open the run, enter regedit to enter the registry editor;
• Navigate to HKEY_CURRENT_USERSoftwareMicrosoftWindows Photo ViewerViewer
• Create a new DWORD (32-bit) value named BackgroundColor on the right side

• Double-click the new value, it will change its value to the color value you need.
Color values ​​are expressed in hexadecimal and ff is added before the color value, such as black as ff000000. Reopen Windows Photo

• After modifications are complete viewer can see the effects. As shown below: