They were always a mix of red and green, and grew in complexity with the speed of the lights.
I just about lost it on the first 2, but by the 3rd, I noticed these amazing, intricate-almost fractal-patterns emerge. There were maybe 7 bursts of the light (faster each time) with a 15 second-or-so interlude.
I just had the EEG today, and I was wondering what others' experiences were regarding the strobe test in particular. As far back as I can remember, I've had a lot of unusual visual phenomena (Palinopsia, Phosphenes, Aeropisia, Visual snow, entire visual field flashing any given color etc.) and I was sent for an EEG to rule out any underlying seizure disorder.