Given that this "experiment" has been going on in Seattle and other cities for a few years now, I think enough data exists to extrapolate the cause/effects here in CO. Seattle has seen higher rates of unemployment, many businesses going under and people fleeing the city to move to places nearby yet outside of the immediate imfluence of the higher wage costs (ie. Away from the higher costs passed on to consumers). At least that's the latest data I read around mid-2017.
ETA: I failed to mention that WA also has a minimum wage increase schedule which is not as "profressive" as Seattles. Apparently, Seattle-ites felt the states efforts were too little, too slow for them.
From this WaPo article published June 26, 2017:
https://www.washingtonpost.com/news/...=.5083abb5ea25
While the study came after CO chose to emulate WA, the evidence of the failure of this sort of effort has been seen since day one. But then again, when did a Liberal ever let facts get in the way of their agenda. The end result is clear; this isn't to help low wage earners, it's to eventually give the .gov more control over more and more people.