How to customise the Shield public messages?

Hello,

Thanks for the great plugin.

For me the black-listed IP message (and perhaps others that I’ve not tried yet) needs to be a more friendly message. If a legitimate user sees this message, it is hardly something I wish to say to them. If a hacker sees it, well, I don’t really care what they are shown, as they’re now blocked anyway. I want my legit users to see something more friendly, rather than treating them like a hacker.

How can I customise it?

Thanks.