I don't think it works like that; you would want someone to fiddle the url while they download Fresh Paint and then share the appx package for redistribution. i believe that's what you want.
well, the folder zip will work for me, since I dont need to 'install' or 'run' the app, I just want the files. and .... fiddle the url on RT is a little bit harder to do, since you cant just install Fiddler on it right ? that said, if someone can provide the original appx package, that's even better Thank you very much !