My issue is related to this post by @John, I think.
I recently upgraded from 4.6.XX to 4.7.14. I had beautiful formatted email templates that I use regularly. I am trying to use my template now in 4.7.14, and it strips all the HTML formatting, such as background color, font type, font color, etc. from the email. When I try to save it, all the formatting disappears.
I've set Administer > Customize Data and Screens > Display Preferences > Configure CKEditor > CiviMail tab > Advanced options > Set fullPage = true as an option, per @Coleman. But that has not fixed my issue.
What am I missing?