Ubuntu corporate identity is instantly recognisable to Linux users, as Windows is to their users. In my humble opinion, it looking dated.
It requires some terminal commands to add the necessary tools to load the extensions from the Gnome site, that appeal to you.
Open terminal (Ctrl + Alt + T)
sudo apt install gnome-tweaks
Before you can utilise this tool, you must go to: https://wiki.gnome.org/Projects/GnomeShellIntegrationForChrome/Installation
To install the Chrome Gnome Shell
sudo apt-get install chrome-gnome-shell
Now go to: https://extensions.gnome.org/ and enable the Gnome browser extension, so you can install the extensions you feel will benefit your needs.
In this example I choose User-Themes, Log Out button, Arc-Menu and Dash-to-Dock.
To enhance and maximise these extensions, I installed Numix Icons, Arc Theme and Cantarell Fonts.
sudo apt install numix-icon-theme arc-theme fonts-cantarell
Then cloned the Numix Circle Icon theme from github
sudo apt install git git clone https://github.com/numixproject/numix-icon-theme-circle.git cd numix-icon-theme-circle sudo mv Numix-Circle /usr/share/icons sudo mv Numix-Circle-Light /usr/share/icons
With these tweaks, it gives Ubuntu an elegant look with improved rendering.