Bat cat

https://github.com/sharkdp/bat#installation

Install deb with dpkg (if on Debian).

Generate config file:

bat --generate-config-file

To disable vertical and horizontal lines in display add ‘-n’ to the generated config.

List themes:

bat --list-themes

and add wanted theme to the config:

--theme=1337

Example scrot: https://i.imgur.com/AQM6YVo.png