The Green Solution: The First eCannabis Website! Online reservations have never been easier! As Colorado's premier Marijuana Dispensary, we strive to bring our Recreational and Medical customers the best quality and selection of THC and CBD Cannabis products, be it Flower, Pre-Rolls, Concentrates, or Edibles. Why Shop at the Colfax Location? The Green Solution® is proud to open its doors to another great neighborhood in Aurora. Just a few blocks east of the University of Colorado Medical Center Anschutz Campus, this conveniently located retail location allows Cannabis consumers to be selective about their preferred experience.