From the article:

Booze and beer are up for debate at the Capitol next year, and lobbyists hope people are tired of the Sunday liquor ban and grocery stores without wine.
State legislators are considering changing both laws, as well as letting art galleries and jewelry shops hand out free glasses of Chianti.
Lawmakers have tried lifting the Sunday liquor ban a few times, most recently in 2005.
"I've always found our liquor laws, particularly a ban on Sunday sales, to be antiquated," said Sen. Jennifer Veiga, D-Denver. "It just makes no sense."
Colorado is one of 16 states with so-called blue laws prohibiting alcohol sales on Sundays.