Speed bleeders

[Whoops]

Bob another thing is that you work just above the brake pads, use some cloth around the working area to prevent the fluid spreading out and soak it up instead, ask me how i know this.
And cleaning up after, shortly after, Houtman is right about the cover.
Some brakefluid is likely to exit slowly, just have the new speedbleeder and correct size spanner handy so you can keep this to a few drops.
There is no pressure in the system because the tiny hole in the reservoir ( just in front of the piston and hiding under the small stainless removable cover ) is open and prevents any pressure buildup, however the same pinprick hole also lets the brake fluid slowly gravitate to the brake calipers, that is what you have to catch in the cloth.

This guy has the right idea;
https://www.youtube.com/watch?v=Fb2NMOLzumw

You'll be very pleased with the result;cheers

A little piece of scotch tape over the breather hole on the reservoir would probably slow the leaking even more I bet.