There are quite a few of them. When it comes to selling, retail stores such as package stores and liquor stores, are allowed to sell beer, wine, and spirits. Convenience stores and groceries are allowed to sell beer that's 3.2% alcohol. Bars are not permitted to sell after 2:00 AM and before 8:00 AM.
Colorado operates under an implied consent law, meaning that all consumers holding a Colorado driver's license are subject to specific laws when it comes to driving while under the influence of alcohol.
In order to drink alcohol, you must be at least 21 years of age. You must be 21 to work in a liquor store and you must be at least 18 years of age to serve at on-premise locations.