When a user visits a stackoverflow question, he should instantly know that there is an activity by a user followed by him. Possible options:
- Make left border
- Change background color of the box
How to do:
- When page gets reloaded, apart from sending watch status background script should also send the list of users followed by the user and rest of the things will be done by content scripts. Content script will check the answers/questions/comments by userIds and highlight those boxes.