pptXTREME's Black and White Mode editor is a one-stop dialog for changing black and white settings for you entire presentation.

1. Select the slides you want to effect from the slide sorter view. 
   (HINT: press CTRL-A to select all slides.) 
2. Click on the pptXTREME  Black and White Editor. 
3. You will see the editor floating above PowerPoint® which is in slide sorter view and in black and white mode. 
4. Click on the object types that you want to affect down the left hand column. 
5. Next to each object type is a pulldown list of Black and White Modes, select the mode you want for each object type 
6. Watch in the background as the changes are made as you make your selections. 
7. Use the Zoom In and Out tools to see more of the presentation in the background. 
8. Click OK when done, or CANCEL to reject all your changes. 

Hint:
The Black and White Mode Editor will save your settings as long as PowerPoint® remains open. You can easily apply the same settings to multiple presentations this way.