I think it might be more because looking at the screen like that was making my eyes f*ck the sh*t up lol, I couldn't even tell what I was looking at, the bars started looking jagged and everything, like some sort of weird optical illusion.
I also imagine screen resolution and all that sort of stuff has something to do with it as well.
The property of colors by which they can be perceived as ranging from red through yellow, green, and blue, as determined by the dominant wavelength of the light.
"hue" is the term that pretty much defines "colour"