Havnt tried this yet but will do when i get home from work -
http://www.sevenforums.com/tutorials/2139-bubbles-screen-saver-change-settings.html
Good Luck!
One can change all settings, and all of them will be reflected, when the screensaver starts - except for the background. It will not use the current desktop.
To be more precise:
- if ShowBubbles is set to 0, a black background is used
(also, when the screensaver is started manually by double-clicking bubbles.scr)
- if Showbubbles is set to 1, the greyish background which is chosen as background of the Windows start screen is used, which lets the bubbles look dirty, sick and tired, and lets you think, your high-end monitor is broken.
With this setting, the screensaver will run on top of the desktop when started manually, but underneath any (docked to the left or right side of the monitor) metro-app: the bubbles will appear from behind the metro-app.
My guess is, this behaviour was the reason for covering the desktop and the metro-apps with a solid background, on top of which the bubbles appear - otherwise visible metro-apps will burn-in despite an enabled screensaver.
Now we have an explanation for the introduced "design change", but we still do not have a "metro-screen saver" that would run on top of both the "regular" desktop and the metro-apps.
For the time being, I use the setting of Showbubbles=0, and MaterialGlas=0 (solid bubbles) because this gives you a real black background with shiny 3D bubbles.