My colleague is currently working through the InDesign CC 2015 classroom in a book. In Chapter 8, it wants her to add a colour theme to My Themes in the Adobe Colour Themes menu but My Themes isn't there.
Her InDesign is updated and we have also reset her preferences and tried using different workspaces.
Please see below as a reference to my colleagues menu:
This is what I see:
There are two methods listed in this documentation for restoring InDesign preferences:
They should use the other method from the one they used (or perhaps they didn't follow the directions correctly).
Also, make sure they are updated to InDesign CC 2015.2.