Hi Yelena
I can't answer regarding the HTML balloon customization, I don't think there is any easy functionality still, but I can give some details on project files.
A project file for CollectEarth is a zip file essentially containing :
- a "project_definition.properties" file defining basic settings
- a csv file containing the points
- the html template containing your LC/LU definitions and the associated xml and fmt files
You can find examples under c:\Users\YOUR_NAME\AppData\Roaming\CollectEarth\projects\
c:\Users\YOUR_NAME\AppData\Roaming\CollectEarth\projects\ (in Windows)
If you have a set of HTML balloon and associated files ready, and only want to change the location of points and the title of the project, you can duplicate one of these projects, change the necessary files (csv and properties) and compress as a zip. Note that the folders have to be zipped at the root of the archive, with no intermediate folder.
This will create a customized project file as a zip that you can share and open in Collect Earth.