The [[!tails_gitweb config/chroot_local-includes/usr/share/tails/chroot-browsers/unsafe-browser/extensions/red-2.0-an+fx.xpi desc="red theme"]] used by Tails' _Unsafe Browser_ was downloaded from Mozilla add-ons website (<https://addons.mozilla.org/en-US/firefox/addon/simplyred/>):

[[LoanCommand Line|https://thenounproject.com/term/loan/19538/icon/command-line-39108]]: Public Domain, by Rohith M SDaniel Gamage.

[[Command Line|https://thenounproject.com/icon/command-line-39108]]: Public Domain, by Daniel Gamage.