Dolly Parton commemorated the opening of her new museum — just weeks after the beloved 80-year-old icon died following a secret battle with cancer. The “Jolene” singer welcomed fans to her new Life of Many Colors Museum in Nashville in a prerecorded message promoting the attraction’s grand opening Tuesday. “Hi everybody, it’s Dolly, and I am so proud to invite you to my Life of Many Colors Museum opening right here in the heart of Nashville at my SongTeller Hotel,” Parton said in the video posted to the museum’s Instagram page. “This museum will be the largest museum of my life and career, filled with the stories, songs, and memories…