There is convertor prepared by someone on Chinese forums that apparently converts MIUI themes to EMUI themes.
Link:
http://bbs.anzhi.com/thread-8855000-1-1.html
Haven't tested it, so don't know how good it works.
Link:
http://bbs.anzhi.com/thread-8855000-1-1.html
Haven't tested it, so don't know how good it works.