Forgotten Notes Features: $PaperColor 

Anyone remember, and actually uses (besides in his memos, maybe not knowing) the field "$PaperColor" in Lotus Notes documents? Using this field, you can set a dynamic background color in your documents.

The field needs to be numeric and contain a number from 1 to 238; usually this field will be hidden. You can compute the value of the field - this way, you can highlight important documents or visualize different categories with different background colors.

About the Author
Marcus Foerster works as Systems Architect for Pentos AG in Munich, Germany. His focus lies on the application side, creating collaboration systems for users, groups and enterprises to get their daily work done. This approach includes integrating complex workflows with intuitive user interfaces, using Lotus Notes/Domino with Adobe Flex and other Web technologies.
Read more in Marcus' blog: http://marcus.foerster.com/blog