Hey, Nataly! Just saw your post (very late). I've been working on a style for 2013 twitter, you can try it out! Indeed, some things are a bit difficult as new Twitter's CSS is quite complicated, but I think it is starting to look good. I'm now working on the header, which I hope to release an update soon. Hope you like it!
Comments
https://userstyles.org/styles/176043/twitter-caroca-2013-style-for-2019