The fancy appearance is probably due to user customizations. Simply changing the terminal font to one you like better and changing the background from pure black to another color (while keeping it dark) makes a big difference on appearance. The rest is probably window decorations, which means tweaking your WM theme. [r/unixporn](https://old.reddit.com/r/unixporn) has a lot of good examples, and most people share dotfiles for you to borrow from.