I ignore all the alternate control channels listed as "blue" on the
webpages you listed, right?

Good idea, since there are none for either of those systems. (Black
is not blue.)

I might be obtuse (in fact - I know I am), but I don't get it. What
are black, red and blue frequencies listed by radioreference.com
(http://www.radioreference.com/module...=TRSDB&sid=206 ,
http://www.radioreference.com/module...=TRSDB&sid=207 )

Which ones do I need to enter into my scanner to listen to all the
police frequencies?

Thanks,