lets see I can get the whole line to highlight in a colour when I select that email in the list. Otherwise I see the entry as coloured writing on a white background. That is what I think I have been seeing for years really. Not that I use tags other than to try and replicate other folks issues.

I've attached what I'm seeing now. In the past all entries had a white background, and the text was the tag color as you say. Now the background for each message is the color of the tag for that line.

Ah, I see what's going on. The Tag Popup Extension is doing it. If I disable that, the messages appear as I expect.

Thanks for the quick response (that caused me to look a little closer at what might be different on my system).

I know of no such option. Also, AFAIK the tag has always caused the entire subject to be colored in the message list.

Unless you are talking about the message body? That would be something different.

Thanks for replying Wayne. In this case it was the background of each message in the message list that was colored with the tag's color. When I disabled the Tag Popup extension and restarted the problem went away, so apparently the problem is in the extension. I'll report it to him.