Cloudflare error page generator (github.com)

Can you actually customize that Cloudflare error page? I thought that was their error page when they lose connection with your site and custom error pages was just the ones your app creates, like 404, 403, etc?

I've been thinking about returning a fake error page instead of the "you are banned" or "you country has been blocked".

What is this for? I feel like that is missing from the faq. I would say it's a joke, but it looks too serious for that.

It should spew random garbage at the bottom of the page periodically to mimic Cloudbleed.