How to change the theme of Office 2013

At best the "choice" of themes is bland.

At the worst it is like staring into a fluorescent bulb for the entire day.

For a huge company, with a great many really smart people working for it, this lack of understanding of their user community is truly astonishing. 

This really has to be an easy fix.  For once Microsoft just suck it up and do the right thing.

Any update to this? Just installed Office 2013 and the color is terrible. If I didn't need glasses I will after using this for awhile.

Okay, so we'll soon celebrate the second anniversary of the first comment on this thread. One would think that in all that time Microsoft would have read enough "pain points" to actually DO something about it. I would love to see some financial wiz tabulate the millions of dollars Microsoft is losing by individuals and large corporations not "upgrading" to Office 2013. It would be a shocker, I'm sure. 

As a huge fan of Microsoft for decades now I am at a total loss as to why the company has fallen so far. They've missed the boat on so many opportunities, from search engines to the cloud. They seem to always be playing catch up instead of being the industry leader they once were. It appears that they are so busy trying to be first at just one thing that they've lost what made them so successful in the first place. Office is the very foundation of everything Microsoft but it's being left to crumble with no response from Microsoft to their customers. Their arrogance knows no bounds now. Their motto with Office 2013 is "tell us what you want and we'll show you how to do without it". How hard can it be to restore what was in previous versions? We're all going blind trying to use Office with these three equally pathetic themes. We simply need some contrast. Is that too much to ask? It appears it is.

Thank you for the feedback on Office’s new look. We are actively collecting, sorting and reading through feedback on Office 2013’s design and User Experience. As the audience for Office 2013 grows, we are being mindful of patterns and pain points that emerge from user feedback. While we do not have any additional Themes planned at this time, it is an issue we are watching very closely.

I agree with the others who have commented on the woeful appearance of Office 2013. As someone who has been in the IT industry for well over forty years, I can only say that Microsoft's User Experience team has failed miserably in this case, and frankly should be looking for new jobs.  Together with the general "flatness" of  the Windows 8 so-called Modern UI, It's yet another example of one part  of Microsoft  doing brilliant work while other parts fail miserably.