I created a Gentoo theme for x11-misc/sddm. I am posting it here just in case someone could be interested to create a EBUILD or something.
Many ebuild requests remain open for years, because nobody maintains the package.
If you want to be (proxied) maintainer of this package, please contact the proxy team  and prepare an ebuild .
You may want to link your repository  or attach the ebuild here until it makes its way to the official tree.
This sounds promising. I already have two ebuilds at hand. Once I've done thorough testing I gonna add them to portage.