PYEONGCHANG, South Korea — The Winter Olympics are a love letter, written to Colorado and sealed with a kiss from athletes that could never have gotten here without the strength of 5.5 million friends back home. “Kids growing up in Colorado can’t dream too big,” snowboarder Arielle Gold told me. When the Games begin Friday at the opening ceremonies, 35 athletes from Colorado, more than any other state in the country, will realize their Olympic dreams. But know what’s really cool?