Outlook message preview - need to change color

At work we use Outlook 2013. Some people now suddenly have the message preview appear in blue (before it used to be black or grey). I went to: View tab \ View Settings \ Other Settings, and in the "Other Settings" dialog box I noticed that in the "Message Preview" section, the font is blue. So I clicked the "Font" button in the "Message Preview" section of the "Other Settings" dialog box, changed back the color and hit "OK" several times. But no change. I then closed and re-opened Outlook. Still no change. Why can't I change back the color for "message preview" for those people? I can change it on my Outlook no problem and it doesn't even require me to restart my Outlook.
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Alexei KuznetsovMicrosoft Outlook MVPCommented:
You can try to reset all your views to default state by running the following command:
outlook.exe /cleanviews

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john8217Author Commented:
That looks like it fixed it for one of the 2 users affected (the other user is out of the office today so I'll have to wait until tomorrow to try it on that one).
     But in the meantime, is there a list somewhere of all the switches (and not just for Outlook but for all of Microsoft Office)?
Alexei KuznetsovMicrosoft Outlook MVPCommented:
This is the command line reference for Outlook:
This is for Excel:
and so on...

You can search support.office.com for command line reference for any of their products.

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john8217Author Commented:
Excellent! Thank you very much.
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