How to use Classic file icons?

[Stock]

I've switched from Classic to MP.
However, the new file type icons are feeling odd

mp.png

I'm so used to the Classic file icons.

classic.png

Is it possible to keep the Classic file type icons while using XnView MP as your default image program?

[xnview]

currently no way

[XnTriq]

I extracted the old file-type icons from xnview.exe:

xnview_classic_file-type_icons.zip

1. Download the ZIP archive attached to this post.
2. Make a backup of the *.ico files in the FileIcons subfolder of your XnView MP installation.
3. Extract the contents of xnview_classic_file-type_icons.zip into the FileIcons subfolder of your XnView MP installation.
4. Rebuild the icon cache of Windows.

There used to be a great alternative set of icons compiled by fellow board member ckv:

• Screenshot
• Download

[XnTriq]

Old school generic file icon (48×48 pixels) for MP:

[XnTriq]

• GitHub: Types
  “Types is a file type manager for Windows that allows you to edit program associations, icons, context menus and a few other things.”
• Ghacks: Change File Extension Icons With Types

[Stock]

Thank you! This was quite the comprehensive answer.
I downloaded the Classic icon set (step 1), made a backup (step 2) and put them in the folder (step 3).
Then I set all .icos to read-only mode, just to be safe.

After a Windows reboot, the Classic icons showed up.

So you can save yourself the work of manually rebuilding the icon cache (step 4).
A simple reboot does it.

[XnTriq]

So you can save yourself the work of manually rebuilding the icon cache (step 4).
A simple reboot does it.

Thanks for your feedback, Stock!