Many of you may be wondering why Loaf 'N Jug gas stations across southern Colorado now have Shell branding.EG Group, a British operator of gas stations, has agreed to change Loaf 'N Jug sites to Cumberland Farms, a convenience store company they own. Changing to Shell-branded fuel is part of the transition.All 102 Loaf 'N Jugs are undergoing the change. According to CSP Daily News, a trade publication, 43 sites will convert this year, and the re…