the walls show up in colour for a second before you move your eyes
i didn't see no colour
I didn't see any color on the walls, either.
OK, I tried it again, putting my face about eight inches to a foot from my laptop screen while staring intently at the black dot and I was able to see colors for a second when it switched.
The wall on the left was light yellow, the wall on the right was dark red and the trees were green.