Colors will not match

I have been trying to configure the colors for quite a while now to match the ones in the screenshot. Most of the colors appear to be showing correctly (with `background=dark` at least). However, it appears that the syntax groups are not configured. Now, I understand this is unrelated to `mango` but I'd really like to match the screenshots. I was wondering what vim javascript syntax file was being used. I have tried `default`, `pangloss/vim-javascript`, and `jelera/vim-javascript-syntax`.

For instance, inside of `pangloss/vim-javascript` it sets the `prototype` keywoard to the `Special` syntax group (Special ==> .Pink) which does not match the screenshot. Has anybody been able to reproduce the colors exactly. They do not look as good otherwise.