If you're running the beta version of Microsoft Office 2010 (available free (as in beer!) from the Microsoft website), you can change the color scheme from blue (default) to black or silver, just like in Office 2007. If you’ve already changed the color, I found that Office 2010 preserved that change upon install. If you haven’t yet, or if you want to switch the color, or if it didn’t preserve that color change, here’s how to do it.
Also: changing this setting in one Office program changes it in all the programs. You can't have some blue and some silver and some black; they will always be the same.
Step 1 details how to download the Office 2010 Beta. If you already have it, skip to step 2.
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Step 1: Downloading Office 2010 Beta
Save the installer to your Desktop or wherever you put installer downloads, DON’T CHANGE THE FILE NAME.
Once the download completes, run the uninstaller. Follow the instruction in the subsequent window.