There is a generic theme framework called base 16 here which includes good looking themes including solarized (or a version of it)
http://chriskempson.com/projects/base16/#:~:text=An%20architecture%20for%20building%20themes,compiling%20base16%20schemes%20and%20templates.


Thanks,
Praharsh





On Tue, Sep 15, 2020 at 3:28 PM Protesilaos Stavrou <info@protesilaos.com> wrote:
Theodor Thornhill <theo@thornhill.no> [2020-09-15, 15:39 +0200]:

> Could it be an idea to generalize the modus themes? They seem very
> comprehensive

I don't think I have the expertise to implement a generic theme
framework.  If there are concrete proposals on offer, I can help by
sending feedback.

--
Protesilaos Stavrou
protesilaos.com