When i received rep and a reply was given to why they thought my post was good a green dot was given, but i have a blank one, with a blue dot and there was no input?

If it was wrong, dumb, or just didn't reflect something about the thread is one thing. But my question was ''do you think running all those CFL's is cheaper then HPS lighting'', or something close to that. If this is neg rep, its bullshit. But im unsure if blue means neg rep or not?
Anyone know?

:rasta: