Close+up+veiw+of+text+with+and+without+grayscale+color+filter

I've noticed that I prefer looking at a screen with the grayscale compiz color filter in Linux as opposed to a screen with all of the colors. From what I have read, the major color which interferes with visual acuity resulting in more blurred vision as well as the color which interferes with "dark adaptation" is the color blue. The human eye also has special (and fewer receptors) in the eye for the color blue than red or green. These receptors also influence melatonin production which affects human sleep cycles.

What started to puzzle me about my preference for the grayscale compiz color filter is that I preferred it even if there was no color and just text on the page. In this situation, there was only black and white text anyway so it shouldn't have really made a difference. Then I remembered about anti-aliasing. Here is an excerpt from wikipedia about the anti-aliasing of text

Anti-aliasing is often applied in rendering text on a computer screen to suggest smooth contours that better emulate the appearance of text produced by conventional ink-and-paper printing.

Particularly with [|fonts] displayed on typical LCD screens, it is common to use [|subpixel rendering] techniques like [|ClearType]. Subpixel rendering requires special color-balanced anti-aliasing filters to turn what would be severe color distortion into barely-noticeable color fringes.

I took some screenshots of my computer and zoomed in to prove for sure that there was some color around the anti-aliased text.

Screenshots without Grayscale Color Filter

Screenshots with Grayscale Color Filter