I noticed this in the real world. You can see the 'an orange/blue yin yang' haze around open windows. IF you look hard and long enough. But I have also noticed in my computer scans. It's appears like a magnetic life force haze around objects.
It'd make an great Sci-story lead, as to why it happens. My science teachers never gave me a good answer nor did they ever notice.
It's never red, green, yellow, pink, black, purple or any other color. I've seen it not only in computer world but in the real visual world.