Quite like what is going on here (the program) but is otline color supposed to be always-on yellow #302c2e ? Can't disable or change it despite changing slidders, numerical value and clicking toggle 20 times in a row (21 to be sure).
Damn, I've tried it out on Firefox on a Windows (10) machine and it works just fine. Not sure. Maybe a cache problem?
Can you try to run it with cache disabled (or incognito mode should also work just for testing it)?
If this is still a problem - maybe you'd be able to run it with dev-tools' console open and paste the errors that show up (if any)?