In the zip-file's "Settings" folder there is a folder "ColorSchemas".
The 786 public 32 zip had a "ColorSchemes" folder there.
… as mentioned in 780 public 32 beta changelog (and 790 public 32 changelog):
I changed color scheme through the menu (View > Color schemes).- Changed: "Color schema" changed to "Color scheme"
The scheme-files were then moved into a ColorSchemes folder.
(And a new theme file "FcCs_MyDefaultColorSchema.colors" was also saved there.)
The ColorSchemas folder was deleted.
So, it fixes itself, but migh be confusing.
(Possibly break something under circumstance X, but I wouldn't know.)