XF 1.5 How to show member online when they don't have avatar?

[rwm1962]

On both our XF forums we only allow certain groups have their avatar show with their posts (achieved by a tweak in the message_user_info here)

We use [RT] Online Status Ribbon add-on to show if members are online on our older install. This is now unmaintained.

Is there another way to show a user is online in the message user info when they don't have a default avatar showing?

Thanks