We have vim-css-color to display colors in .css files. Currently I'm editing my i3wm config to match colors to a new terminal theme and it would be quite handy to be able to actually see colors I'm dealing with. Is there a plugin that would highlight colors in any file?
I tried to use the above mentioned plugin by renaming a config to config.css but it still misses a couple of colors. Here is a comparison of what atom (first picture) does and what nvim (second picture) does:

