I'm updating lightwithin to 1.2.0, and i'm adding two new powers: ForestAura and ThunderAura. This a showcase of the first one, where you can pass through natural blocks and see the outline of allied/enemy entities around you. I find it pretty cool. Ah and also you are transparent-green!
Technically you could even make blocks non opaque, but you would be rendering too many faces since you would also need to render the inside of the blocks