gksudo feature request - Grey out the background

[Eric Feliksik]

Since a few weeks, gksudo locks X - that is good. But it's also very 
confusing, especially since there are non-functioning window borders and 
nothing visually changed. After a while people will figure out X has 
been locked, because clicking is futile - but it's not obvious. The 
whole concept of switching user is unknown to many, anyway.

I propose two things:

1) dropping the window borders
2) repainting the whole desktop in grayscale, and THEN show the "Enter 
your password" dialog.

This would be much clearer to the user, because it emphasises the other 
windows are inactive, and the gksudo window is brought to front: "Hey, 
you're doing something important now".

Somebody said the greying-out shouldn't be too high of a contrast 
change, since that would be too flashy, but I thing that can be managed 
easily.

I'd like to bring this under your attention before the hoary feature 
freeze. I must admit I brought this forward in 
https://bugzilla.ubuntu.com/show_bug.cgi?id=5913 and on IRC as well, and 
if there's a good reason not to implement this, that's fine - it's just 
that there was no response yet.

Thanks, hope to hear your feedback,

Eric