LRC enderchests.

[Nico8300]

Black means to make it public so no one can BREAK it and take it home

Yes but then we need private wood private diamond blocks ect... Just use world gaurd

That would crazy as hell, then everyone can just set a block somewhere and met it his, so no-one can remove it, and just leave it there to annoy them.
That is why there is worldgaurd, it only can be made by moderators and admins, who are fully reliable for there actions, and some idiot who just private it for himself and do nothing with it.

then people can ALREADy annoy with chests,furnerances,enchanters,incubators,etc.

[Handyman]

yet it doesnt hapen, but if everything can be protected, it will be madness