Last I checked, you can mimic this with paint that is 100% transparent
except with new shaders a very transparent top texture will appear
this could be achieved by creating a new light not attached to the brick that just gets removed with the brick
not if you spray pearl fx on it. in fact doing so shows the brick outline (when holding a tool)
not when the brick color is 0 0 0 0 instead of 255 255 255 0 like it is in most packs
it could, but you'd also have to make sure that it works on load as well