Add canonical color definitions to base-browser
Security Level panel currently depends on --torbrowser-warning css variable defined in tor-styles.inc.css which does not exist in base-browser, as it is added in the Tor Browser branding commit.
Security Level panel currently depends on --torbrowser-warning css variable defined in tor-styles.inc.css which does not exist in base-browser, as it is added in the Tor Browser branding commit.