Im not sure but you could probably open up the same file from City Nights and see how they turned it green and try different variables. I was wanting to say that the set of numbers on rect were C K M Y layout but I couldnt tell you cause I tried putting in those intervals in photoshop and it wouldnt take them cause it only allows up to 100% .. Like I said best thing to do is look at the same file but is from City Nightsand see how they made it green then mess with the numbers till you get it turning to a purple or shade of blue then youd know what your doing right or wrong from there..