Add elements for customizing the login page

Dear developers, Would be worth to add the option to customize a bit the login page, like a custom background maybe with a transparent effect to avoid opening up for text color full customization? I explain the reason of this request. At the very beginning, when I started using Vaultwarden I have chosen as my own local server domain name something identical to a public domain name, without knowing that it was already a registered name. My web request was forwarded outside my local network and I was actually trying to log in into a vaultwarden of someone else. That page could have been a fake one and I started to be a bit paranoic. So I decided to customize manually my web page editing the web-vault folder and without having any experience with HTLM I managed to add a background image, adapt the color of some text and my initial to the "Vaultwarden (unofficial Bitwarden® server)" message at the bottom of login page. Everytime I update my docker I risk to lose al…