Just break the foot lights out with a flat screwdriver. You can buy new ones in your local fiat / alfa romeo garage. The fiat 500, fiat croma, alfa romeo 156, alfa romeo guiletta and many others have the same light sockets.The foot well light was a complete PITA due to the bending and body position needed to see and pry but it finally popped out and its another W5W bulb. My puddle lights popped with ease.
Look: Alfa Romeo 916 GTV Spider 1995 2005 Door Card Courtesy Light Left Right | eBay