Just a heads up to all.
I tried using this method and got the green bars, and left it on my device for 10-15 minutes just in the hope that it'd somehow work.
It caused burn in on my screen, and I had to use one of those burn-in/dead pixel fixers for about an hour before it was back to normal, and I assume it could cause personal damage.
Of course this is common knowledge, but don't leave contrasting colours on your screen for a long time.
By the way, if this doesn't work, try installing SuperSU off the Play Store after running. For me, everything except the Superuser APK was installed and working, so I just downloaded SuperSU and it functioned fine.