Changing the Color Theme in Office 2013 including Outlook 2013 and Word/Excel was not possible until the final RTM release which is not available on Technet and Volume Licenses sites at Microsoft. This has been a very sore subject with the Office 2013 Preview as the default White theme has been quite painful on the eyes. So changing the colors was actually the first thing I checked on after installing the RTM and I’m excited to announce it IS possible and here’s how to do it.
Again – This only works with Office 2013 RTM “Release to Manufacturer”. You cannot change the theme colors in the Preview.
Launch Outlook 2013 (or Word or Excel…) and Click File, Options
On the General Tab, click the down arrow under Office Theme to choose a new Office Color. White, Light Gray and Dark Gray are the available options.
Once you choose a new Color Theme, it will take effect in all Office apps including Outlook 2013, Word 2013, Excel 2013 etc… Here’re a few screenshots of the new look.
Click to enlarge:
Personally, my favorite is the Light Gray however I was also getting quite used to the White Color Theme also. Microsoft is obviously trying to maintain a specific look here being that the colors are fairly limited vs. Office 2010.