wpgtk.vim colour scheme does not work in Oni

Oni Version: 0.3.9 Neovim Version (Linux only): 0.3.1 Operating System: Manjaro Linux (kernel 4.14.90-1-MANJARO)

Issue: The wpgtk.vim colour scheme (similar to wal.vim) is not working properly with Oni. Instead, it displays default colours (not to be confused with the Nord theme).

Expected behavior:

I would expect Oni to somewhat resemble what the theme looks like with standard nvim or vim in my terminal (Alacritty):

Actual behavior:

I thought I would mention that you may have seen the Dracula theme being imported in my ~/.vimrc. Yes, this theme does work correctly in Oni for me.

Steps to reproduce:

1. Download and install the aforementioned wpgtk.vim theme; I used vim-plug to do this.
2. Set the theme within your ~/.vimrc (or nvim config) with colorscheme wpgtk.
3. Load init.vim with Oni.
4. In Oni config, set "ui.colorscheme" to "wpgtk".