Disable kernel messages on the console

[Cág <ca6c%bitmessage.ch@localhost>]

Hi,

Is it possible to completely disable kernel messages on the console
(they are green by default)? "boot -q" reduces verbosity, but "boot -z"
doesn't disable them, instead reducing verbosity of init (white on black
by default). Setting kern.messages to 0 with sysctl doesn't seem to help
either.

Thanks!

-- 
caóc