When you activate a brick, your current paint color gets set to the paint color of that brick, and you do not need trust to choose the color of somebody else's brick.
This is useful in maps with lighting that makes things look different than they are (mostly a bunch of slate edits)
I might think about making this myself in about 6 months, but I'm wondering if anybody else is interested in it too. (and would like to make it)
Ill make a model if people would like so we don't just have another wand.