vim-lightline: colors not used in CLI
# Description
The vim-lightline theme affects vim GUIs that use it, but not CLI like ... vim.

# To reproduce

Steps to reproduce the behavior:
```
yarn add themer @themerdev/vim-lightline @themerdev/colors-default
yarn run themer -c @themerdev/colors-default -t @themerdev/vim-lightline -o build
mkdir -p ~/.vim/autoload/lightline/colorscheme/
cp build/vim-lightline/ThemerVimLightline.vim ~/.vim/autoload/lightline/colorscheme/
echo "let g:lightline = { 'colorscheme': 'ThemerVimLightline' }" >> ~/.vimrc
```

## Screenshots
That's how it should be :
![NORMAL is light blue](https://user-images.githubusercontent.com/35574148/141208552-4ad917b1-268e-4e6c-ae8f-c0a9e7507897.png)
That's how it is (check the NORMAL background being darker) :
![NORMAL should be light blue](https://user-images.githubusercontent.com/35574148/141208555-43bdef2a-23d8-49db-9e32-0a7d0d602931.png)

## Expected behavior
I expect lightline's theme to have support for both CLI and GUI applications.

# Environment information

## CLI

Running up-to-date Arch linux.
node version 16.11.1
themer version ^3.3.9
@themerdev/vim-lightline version ^3.1.2
