I think it is Big Caslon CC. If you wanted to have the different color inside with a black outline, you could easily do so by downloading it here: http://www.fontbureau.com/fonts/BigCaslon/
(it's not free) and then going to Powerpoint and selecting Format > Text Fill > Gray > Text Outline > Black. Hope this helps!
Edited on Jun 13, 2013 at 18:31 by 54fonts
All times are CEST. The time is now 14:44