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Save mouse clicks with Word's highlight shortcut

If you're using Office 2007 or higher, the following should allow you to highlight or choose your color of highlight without using the mouse:
[Alt] + H + I + Enter
That will apply a yellow highlight. However, you can use arrow keys to choose a color before hitting enter if you want. You could also use this method to choose your color of highlight and then use [Ctrl] + [Alt] + H to apply it.