To be treated local, act local, don’t expect, don’t change, just respect the local conditions and appreciate the moment. Before you know it you are considered local, even if you don’t dress, talk or act like them.
You just appreciate what it is to be local just like them.
I'm not sure I understand what it means to "act local." Do people in Colorado ski towns have esoteric cultural practices that require years of anthropologic study to comprehend? Or does it just mean "don't be an a-hole, generally speaking"?
If "locals" refers to people who grew up and went to school together and share a web of intergenerational relationships with which they are bound up, then it seems a little condescending to think that you can act your way toward acceptance, like some sort of Jane Goodall of snowsport demographics.
And then there's the economics; you want to bop into a ski town with the education, income, and free time that made your trip possible and then...what, put on a flannel shirt and Carhartts and perform a pantomime of down-home localism without the inconvenience of actually experiencing any of the fundamental realities of local life? Economic insecurity, substance abuse/addiction, domestic violence, rural isolation, and ineffective school systems are ingredients of local culture that often constrain people's lives in ways that ski tourists don't have to think about. Maybe instead of trying to "act local" it might be a better exercise to try to think about how locals see you and simply acknowledge your good fortune.