Pamela Anderson is living la dolce vita in every color of the rainbow. The 59-year-old actress has been on a technicolor tear at the 83rd Venice Film Festival, where she’s promoting her new film “Place to Be.” Since Friday, she’s served up four looks in as many days across cocktail parties, gala carpets and photo ops, making waves on the Lido at every turn. The “Last Showgirl” star kicked things off Friday at the Golden Globes x Aman Beverly Hills Cocktail Party in a coral pink caped Oscar de la Renta gown ($5,990), adorned with a bejeweled hibiscus brooch at the shoulder. Hairstylist John Nollet styled her platinum blond hair in bouncy,…