We missed this gem, Adam. Excellent colour in stars and galaxy. Some hamburgers are shown as too blue in the giant elliptical part (far from the collision with the edge-on spiral) when it should be pastel salmon pink to reflect the cessation of young star formation out there. You've got it much more plausible - blue-white at the collision interface and pale pink further out. It's good when an image matches the astrophysics.
The dusty Superman "S" is there. There are even good hints of the relativistic jet.
