When I do a Lock Topic, the screen goes grey.

The topic is locked ok, but the "Topic Locked" popup with Ok button does not appear so the screen stays greyed out.
Of course pressing Esc does the trick too in this case since the operative action has been completed,

Since the basic function (Lock Topic) is performed, I consider it a cosmetic error that can be fixed when time allows.

The answer to that intricate question must be - Yes, it works in other places. I have the JS popups with buttons in other places.

In the Colorgrey.js, I removed the tiptip stuff since it spread to my other page links.
If there is a format error, I'd be happy to know how to correct it.

<Resource tag="HEADER">
	&lt;script type="text/javascript" src="~/js/jquery.tipTip.minified.js"&gt;&lt;/script&gt;
	&lt;script type="text/javascript" src="~/js/ColorGrey.js"&gt;&lt;/script&gt;
	</Resource>

It seems like it is the "action notifications" that don't work fully ok for me.

Had a report about a "message flood notification" the other day that just made the screen go grey with no popup to press.
PM notifications work ok, but in some places non-existing popup boxes just grey out the screen.

However, the "flood message" says "You can\'t post..." - just a minor cosmetic issue, but at least it shows up now and does not only produce grey mist on the screen... 😄 👍