none of this worked for me... Just live with it. I even tried using a slightly damp cloth.
I'm not surprised that didn't work - you need something that gets inside the grill.
I don't think it's dust. I think it's just the way the aluminum looks when it's laser cut. It just leaves a bunch of discolored aluminum. It's not's fault, it's the machining process they use.
I didn't think this was what the OP was talking about, but I'm not sure now! I know on my MBP there are bits of gunk that have got into holes in the speaker grill - these weren't there when I opened the box, so I know it's not the machining process.
Oh, I thought he was talking about the dust that appears to be around the speaker holes. The dust as always been there for me, but I can only see it in low-level lighting conditions.
this is regarding the new MBP... there is a watermark-like thing splattered all over the grille. you can only see it in low level light and in certain angles. i can live with it im just OC![]()