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Microsoft Office 2003 is a version of Microsoft Office, released on 19 August 2003.
It included a refreshed UI, which changed its color in relation to the selected Windows XP visual style. However, this feature worked with the Luna theme only, because the Classic and custom themes caused the UI to be colored gray. OneNote and Infopath also debuted with this Office version. It is the last version of Office with the Office Assistant included. It needs to be activated manually, since it is disabled by default since Office XP.