BOYNTON BEACH, Fla. (CBS12) — The Boynton Beach Police Department issued a purple alert for a missing woman who was last seen near a Walmart last Friday. Darlene Rizzo, who is believed to be missing and endangered, was last seen at around 6 p.m. at the Walmart, located at 3200 Old Boynton Road. Police believe she may be driving an RV with the front right bumper damaged that’s bearing a temporary tag DTP0791…