Fix rendering colours on Night mode

[nikitavoloboev]

I have a book where I include a Gist using this plugin however in night mode, you cannot actually see the gist because the syntax highlighting is broken. See image below :

And here is the Gitbook page of it.

I really like using Night theme on Gitbook and do wish to use this plugin however this makes night theme unusable for me. 😞

It renders nicely on all other themes though.