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Remove or change stationery and color backgrounds on replies and forwards
Add a background color, gradient, texture, pattern, or picture. Begin writing your message, and then click Options > Page Color. Themes group on the ribbon. If lack of contrast is your main issue, changing the theme might help already. However, the alternatives are “light gray” and “dark gray” so. With Outlook , you’ll have the option to show a message with a white background. To change this, that is, to turn the lights back on, click.
Making the Outlook interface less white and bright – HowTo-Outlook
This might have gone unnoticed for the most of you but the name of the sender of the message is now displayed in a cbange font than the subject.