As requested by some users: ‘old’ style now accessible via https://old.lemmy.world
Code can be found here: https://github.com/rystaf/mlmym , created by Ryan (Is he here?) (Yes he appears to be! @[email protected] ! Thanks for this awesome front-end!)
I believe Reddit’s code was open sourced for a period of time, maybe that’s this looks identical.
Every web frontend is source-available. You can do some obfuscation sure, but it’s always possible to just grab the computed style properties when the document finished rendering.