Hi macmiester,
Glad to hear that you have fixed the issue by your own.
Such an issue should be related to the "Use High Contrast" option. we can uncheck this option to fix it.
1. Click Start, click Control Panel, and then click Accessibility Options.
2. Click the Display tab, and then click to clear the Use High Contrast check box. click OK.
Related KB article:
320531 Changes to fill color and fill pattern are not displayed in Office
http://support.microsoft.com/?id=320531
If you have any other questions or concerns, please do not hesitate to contact me. It is always my pleasure to be of assistance.
Have a nice day!
Emily Lin
Microsoft Online Partner Support
Get Secure! -
www.microsoft.com/security
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