What's with the grey envolope on the far left side of my posts with the dot in the middle????

There is not even an explanation in the legend below.

Am I special? I hate being special.

That is a thread you have replied to or started. They are grey when it has no new posts since the last time you looked, else, they are colored.

Gee thanks......I thought I was getting singled out again. ....Where isssss my medicine. LOL

Don't forget the tin foil hat.