Origin: <a href="http://community.roll20.net/discussion/1096/chat-modalities-for-roll20#Item_1" rel="nofollow">http://community.roll20.net/discussion/1096/chat-modalities-for-roll20#Item_1</a>
"Full screen transparent overlay
If the chat interface is a full page, then it would be good if the transparency could be set and it could appear as an overlay over another page (e.g. the current map)."
Chat Transparency - Like an opacity - I like it but a player preference like timestamps.