Researching about thin film interference brought up the idea of anti-reflective coatings for glasses. This page says that they can produce colours at oblique angles. I noticed these reflections.
The concave side shown above produces multiple images. I think that is because it has a wider field of view but I'll need to draw a ray diagram to prove it to myself.
The convex side is shown above. I'm not sure I'd describe the angle as particularly oblique but the white lights do come out as green. You get double images which must be reflections from top and bottom surface. The lens on the left is thicker which probably explains the bigger distance between the pair of images.
