Yes, you need to git pull the gsaw-js repo, after a git clone ;-)
You forked it! ;-) Try to read up about using git via the macOS terminal Fabi! It's not so really easy to use!
And you didn't AT ALL cause trouble: you made a great suggestion and now that I found a technical way to conveniently implement it (virtual stylesheet node injection & parsing the JSON "css object" via the html data attribute (data-gsaw-config="") we are now ready for MANY MORE COOL EFFECTS! SO you only helped to guide gsaw-JS to grow in the right direction! Thumbs up for your ideas! :-)
Yay! I hope to have another cool idea soon :)
I will check the pull stuff :D