Ah, I wasn't expecting this comment, but it makes total sense... Many companies take screenshots directly of their software, and we do too, but this particular shot is from an SLR camera with a wide aperture setting creating depth of field. In other words, it blurs out anything that isn't within a small range of focus, and with my screen at an angle, that range includes just the middle of the shot. The "glow" you see is just the blur from the lens diffusing the lines. So the GUI never changed, I was just trying to be a bit artsy here...
That said, an optional glow setting can be added in the future. Rob and I spoke about that effect early in our development process and it is possible. We just have to balance it with the other features that we've promised. In particular, I'm thinking about the full editor version of the synth... But if enough people are interested, we can prioritize glow in the GUI. Thanks for bringing this up!
All the best,
Taiho