Our grocery stores don't sell hard liquor ever. They do sell that 3.2 crap though which I never thought was worth the bother in my drinking days. Do you know how much 3.2 you need to drink to get a buzz? I don't, because my bladder always gave out.
It used to be that our privately owned liquor stores couldn't sell anything on Sunday. However, at a store called "State Line" that is right on the border of Colorado and New Mexico (which has far more liberal liquor laws), you could drive the 40 miles or so from here to there and buy all the liquor you wanted and take it home. State Line cured many of my Sunday hangovers back in the day.
The Colorado Legislature finally legalized the sale of liquor here on Sundays a while back. However, I still don't think you can buy liquor on election days until after the polls close.
Also, it is illegal to sell liquor on either the Navajo or Ute Reservations - ever. I'm not sure if this is due to a blue law or an effort to lessen the decimating effect of alcohol on Native Americans. Whatever the reason for its implementation, the liquor ban on the rez is a joke. There are plenty of bootleggers who will sell Natives whatever they want - for a higher fee, of course.