The current 6.7 look and feel is a dark gray in tone with the OSX apps. What I find annoying is that pressing on the
progress bar does two things:

* show the tasks popup 
* repaints the whole main window with a lighter gray.

(see the attached screenshots).

This means to me that internally the progress popup GUI must be some dialog which "steals" the "active window" status of
the main window.

This is wrong because:

* in OSX a popup is just part of the window and does not determine it to repaint or lose "focus"
* having that whole main screen repaint itself is disturbing (having the whole screen flicker to a lighter color).