Recent messages graphical indicator

It'd be nice to have some sort of graphical indicator for whether a channel is active or has been recently so we don't have to go manually through the list of channels to check.

At the moment the online indicator of activity is the white dot and the white text color titling the text channel.

What I'm proposing is another indicator for when a channel is "active" (someone is actively typing in it) or "recently active", someone has sent an unread message to the channel in the past 10min (subject to change). If any of the two conditions above are true, highlight the channel in green or some other color (other than white) to let the user know there's active conversation in the channel. When the time limit of 10min has passed, remove the highlighting and keep the white dot/text channel title.

Attached is a screenshot of a rough example of what the channels should look like. Assume channels

• #javascript-typescript
• #python
• #offtopic

are active or recently have been active.