Take a look at my recent post about this.

My original empeg as well as two of my recent orders feature the darker (but normal by all accounts) blue. I suspect this is not the dark blue that Rob was talking about. I have confirmed with a few other people and theirs are also using the darker blue like on mine.

The third new unit I received has a different blue lens. Much lighter. The darker one you can almost call Navy when it's up against white paper. The new one is definitely not. I posted two pics, one direct from camera and one which I colour corrected to match what they look like by eye.

Bruno