My Singer 128 is a blueface model. Made with no trim and no shine during wartime. The chrome was needed for guns. She is not a pretty girl, but you've got to love her anyway.
Have you given Alva a coat of car wax? There's a lot to be said for a nice shine, even on chipped paint. The decals can be cleaned off if they don't add to her beauty. Then her cool shape could be the focus. I'd love to have a machine like Alva.
I just bought some rose decals for my 301. Those were made very plain and her name is AnnieRose, so she's getting some roses. Will she be authentic then? No. Do I care? No, she mine and not for sale.