DENVER — Days after relaunching itself with new branding, the driving forces behind Boulder Beer Co. say the state’s first craft brewery will aim to open a new taproom in its namesake city in the next two years. In an interview with BizWest, Sleeping Giant Brewing Co. president and founder Matthew Osterman said Boulder Beer never really went away after its production and recipes were offloaded by Boulder Beer Co. founders Gina and Frank Day. Sleeping Giant managed the distribution of the brews since then with minor interruptions to retail store deliveries in certain markets early last year, but the goal soon after the contract brewer took over production was to give the lineup a fresh look.