<img width="1440" alt="WX20190902-135400@2x" src="https://user-images.githubusercontent.com/32741741/64092997-4f876e00-cd89-11e9-9bcd-a851796c402e.png"> vim8 on the left and neovim on the right, the transparency is due to iTerm2, they looks the same except weird highlight for comment in vim 8. However, even in neovim it doesn't look right, compared to your screenshort.