There is a new 0.48 version of gtk-engines-qtcurve, which now offers the configure option to include mozilla-mods (userChrome.css and firefox.js additions) or to exclude them. I will attach an updated ebuild. Reproducible: Always Steps to Reproduce:
Created attachment 113520 [details] x11-themes/gtk-engines-qtcurve-0.48.ebuild
In the meantime 0.48.1 has been released, but same ebuild works for that :-)
0.48.3 is out.
And now we're at 0.48.4.
I'm keeping an up-to-date ebuild in my berkano overlay, until beandog finds the time to commit this to the tree.
Created attachment 130497 [details] gtk-engines-qtcurve-0.53.ebuild Version bump, we are getting quite outdated