From what I've seen, state taxes only account for 20% in the US, with a vast majority of taxes collected being federal. So if Colorado makes a decision, it won't affect most taxes people pay. I also wonder if a decision to collect taxes in Bitcoin is something a state can decide on its own or if the green light must be given on the federal level for that as well. And if they collect the taxes in Bitcoin, but then convert them into fiat, doesn't it call for a sell tax on behalf of whoever does the conversion? I wonder if a decision like this can actually work in the US.