GREELEY and BOULDER — Anton Collins Mitchell LLP, a Denver-based accounting firm with offices in Boulder, Greeley and Laramie, Wyo., has simplified its name to ACM LLP and created a new logo. The change, effective with the new year, was more of a formality, said Gregory Anton, chairman and CEO. “We are known as ACM in the communities in which we serve. We took the opportunity to update our brand to reflect our commitment to the Rocky Mountain region.” The firm will launch an updated website in mid-January. Anton said the firm continues to be in growth mode. Since its founding in 2002, the firm has grown from three partners and 24 employees to 33 partners and directors and more than 175 employees. It added two partners to the Denver office this year. ACM provides assurance, tax and consulting services to the middle market companies along with their owners, as well as public companies, governmental and philanthropic organizations.