I don't recommend add-ons that invert colors as these don't work well on some
websites (and might become unusable in future releases as well if they aren't
maintained).
My advise is to find a dark (but not too dark as black background is not
fully compatible with some websites) system GTK t
ChanceH, VirtualBox is totally nonfree according to the Parabola
"your-freedom" blacklist. :)
In Parabola run this below,
sudo pacman -Su --noconfirm --needed qemu kvm xen libvirt virt-install
virt-manager
You should have missed Xen in a reply. :)
However, any other libre virtualizations other than QEMU, KVM, Xen, LibVirt,
virt-install, virt-manager?
If you have to use a chromium based browser, use iridium browser. Supposedly
that one is free software.
Do you have an x200 already if so I would assume you would have to do
research.
If not just buy from minifree.org