Use of flash with Leucauge venusta
I recently took a series of photos of what I assume is Leucauge venusta. I noticed that the amount of green and the amount of yellow varied slightly on the same spider depending on whether they were in sunlight or shade. Moreover, when you use the flash, large areas of the abdomen turn silver. It would seem that there is some kind of a reflective material that changes the apparent color pattern based on the K value of the light.