I am using VS 2015 Enterprise Edition. I have installed Color Themes Editor via NuGet. In the video description on VS Color Theme editor Video I can see that the extension supports creation of new themes resp. editing of existing ones, as in the following picture:
In my VS there is no left box with "New Theme", but only the preview of the prefabricated ones, as the the second picture:
What can the problem be or what do I miss?
To create a custom theme, you first need to copy an existing theme:
After the copy is created, you can edit and rename it:
This seems to be obvious and intuitive, but I failed to find it in the description.