While Windows lets you change the folder icon, this program lets you change ... folder icons to be specific in the main interface window. 8 Collections of 24 icons each can be added.

1. Use the File Explorer to navigate to the folder you want to change icon sizes in. Using the top toolbar, click "View." 2. Below the "View" tab, there will be a small sub-window with options ...

lets you enlarge the preview and change the folder icon style. You still need to deal with a single file preview (in Windows 7, for example, folder thumbnails can show several images ...

You can set a dark or any icon of your choice – but the images have to me in the .ico format. Read: How to change File and Folder Icons. As an example, let us change the icon to a dark one.