Oh, please don't say "gray on white" or "blue on white" is good for your resume because it looks cool. I know everyone's writing documents with blue and gray text, but it just isn't the best color scheme. It's hard for readers like me who have less-than-perfect eyesight.
If your resume is easy to read, it's more apt to get read. So use the highest contrast you can get.
The Best Color Scheme: Black on White
That's right, good ole black text on a white background. And that goes for cover emails and cover letters as well as resumes.
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You don't want the employer or recruiter to have to bump up the size of text on his screen or have to print it out or put on his glasses so he can figure out what you've written. If he has to jump through even a small hoop to be able to read your text, he may not do it.
And if you're tempted to put your name and contact info in the Word header of your resume, don't do it. Text in the header will be gray when your document is opened in Normal View, which is how most employers will see it on first review.
Why take that risk? Play it safe and make a good impression by sticking to the best color scheme: black on white. Now that's cool!