nice, i used grey scale cause that work with mostly all skin.
Yeah I think it would be too much work to make full icon sets in each color, but it was easy for me to edit. I updated Genre icons with these too, love them.
Not a big deal, but I was looking through that icon set. These were some alternate icon choices (though yours are great, do your thing)
Collection - file-copy2 or stack
Animation - palette or game (or maybe github?)
Action - run or focus-3 or radar
Sci Fi - reactjs
History - quill-pen
Foreign - globe
drama - chat-1
I used the sword icon for war, the crown for fantasy, and the magnifying glass for mystery
The ticket and slideshow-3 are good icons too
Just some thoughts, love these regardless