Isolating Triggers from WPF THemes

HI,

I am using the WPF theme which is covered at Codeplex.com. Everything works fine. The theme used applies. But there is a problem where I need to create a style for controlling buttons (especially with triggers) and associate it with a button. What happens is, the theme is not being applied to this button because I have a different style applied to it.

How do I take care of this?

-Ranjith