Is it possible to achieve visual effects similar to ColorfulTabs.uc.js?

[921j]

I used to like the "ColorfulTabs.uc.js" very much! It makes the tabs very eye-catching and easy to distinguish, as shown below:

But later, with the update of Firefox, it became invalid and there was no subsequent maintenance. I thought it was no longer possible to achieve this effect in dark mode and Lepton-Proton theme. for this reason that I gradually lost the motivation to use Firefox as my main browser.
Yesterday, I suddenly found that Floorp can actually achieve similar functions. Unfortunately, the object is "tab bar" instead of "tabs", which ignited a little hope in my heart. I wonder if it can be reproduced? PLZ!