My grandfather just recently gave me his Kodak Retina II from the WWII. He also gave me his camera bag and inside it is a roll of exposed 35mm Ansco color film in its aluminum/steel canister. My guess is that the film is from the 50's or maybe 60's. I am in a photography class and really want to develop it. Anybody know what the developer would be? Would it just be regular C-41?