How to: Change a slide title or text format so that it differs from the master.
Solution:
Select and change a single slide.
1) Select the 'View' menu and select 'Slides'.
2) Move to the slide on which to make changes.
3) Select the 'Title' text box.
4) Make the desired formatting changes.
5) Select any other desired text object.
6) Make the desired formatting changes.
7) Repeat steps 5) and 6) for each text object to change.
NOTE: Changes will not affect other slides or the masters.