Hi all, as stated in man page for xxxterm:
ssl_ca_file If set to a valid PEM file all server certificates will be validated against it. The URL bar will be colored green when the certificate is trusted and yellow when untrusted. If ssl_ca_file is not set then the URL bar will color all HTTPS connections red. it looks like it's able to autenticate only against PEM file, but certs are stored as ASCII text in .xxxterm/certs so what's the correct setting for that?