PowerPoint .thmx Template -> Keynote Theme

Hello,

Using Keynote 6.5 here. Just got the updated corporate PowerPoint theme in a .thmx file. Keynote doesn't seem to be able to open it. There doesn't seem to be anything special content-wise in the file (no multimedia, a couple of logo images, some text).

Is there a way to import and use this as a Keynote theme?

Thanks for keeping me out of PowerPowerpoint!

--241