I made a grey theme. The dark text can be a bit difficult to see on some buttons though https://www.mediafire.com/file/4tus1yt1nwxx0dq/Dark_Grey_Theme.zip/file
I also made a rose gold theme as well as a darker version https://www.mediafire.com/file/c2u5ivvkiq58qgo/Rose_Gold_Theme.zip/file
https://www.mediafire.com/file/szeb88lh7q9l05t/Dark_Rose_Gold_Theme.zip/file
and a cool grey theme https://www.mediafire.com/file/rg4zhh2ynqw2z1u/Cool_Grey_Theme.zip/file
Red: https://www.mediafire.com/file/958iwr6jkh4czvj/Red_Theme.zip/file
Purple: https://www.mediafire.com/file/e12p8o7k7syuhem/Purple_Theme.zip/file
Green: https://www.mediafire.com/file/ifiw07j3itek0ag/Green_Theme.zip/file
preview of the themes: https://imgur.com/a/15m4jrt
(edit: i felt that the silver theme isn't silver so changed the name to cool grey. I also changed the name of the grey to dark grey)