Windows XP is almost dead, but if you want to keep its memory alive there is a way to transform your Linux system (Ubuntu and Linux Mint) into a Windows XP lookalike.
Getting your Linux system to look like Windows XP has a downside, and that is a very ugly and old interface. Nonetheless, this being a Linux system, it will be infinitely more secure.
The installation of this Windows XP theme can be done in a few quick steps, with the help of the guys from noobslab.com. All you need is to install the theme and the icons from a PPA. Enter the following commands in a terminal:
sudo add-apt-repository ppa:noobslab/icons
sudo add-apt-repository ppa:noobslab/themes
sudo apt-get update
sudo apt-get install win-xp-theme
sudo apt-get install win-icons
After the installation is completed, you can use a tool like GNOME Tweak to activate the items. Enjoy your Windows XP lookalike.