Yes, sour beers have gained popularity in Colorado, with several sour beer brands originating from the state. For instance, the 'Sour IPA' is brewed by the New Belgium Brewing Company in Colorado, and 'La Folie' is another renowned Flemish-style sour ale from the same brewery. Additionally, 'Fruit Stand – Cherry' is a product of Casey Brewing And Blending, based in Colorado, known for its specialization in fruited sours. These brands, among others, highlight Colorado's significant contribution to the sour beer industry.