This one was in the next drainage tunnel - it was darker in there, and the colours of the glow sticks are more pronounced - purple, green, yellow, orange.
One thing street artist ( and it is a form of art...even tho some people view it as defacing property ) give us photographer's is great photo's....well done and very brave of you. :)
I'm a big fan of street art and also love to shoot it. The downside for me is that all the good stuff is in the kind of neighborhoods where it isn't wise to walk around with an expensive camera!