UPDATE!
I have perfected my original solution and now one can automatically create thumbnails to serve as custom folder icons in any folder you choose. Find the instructions and scripts at:
http://www.soapbaux.com/linux
If you decide to install the scripts (I tell you how) you will be able to customize any folder in 3 easy steps. After selecting a representative photo to put on your new thumbnail:
1. Copy the photo and rename the copy to
temp.jpg
2. Paste the renamed copy back into the same folder
3. Execute the shell command (Ctrl+e) and enter the proper script name
That is all. Please find the Makethumbs scripts package at the above URL and...
Have fun with it...
- mikie