I want to reduce the saturation of my laptop monitor to the point that it is almost grayscale. That's the goal.
Intel and Asus don't have an answer. Asus Splendid and the intel graphics control panel can increase the saturation, but not lower it.
I would prefer a software solution, although I DIY'ed a vga grayscale adapter for my desktop.
I have an Asus UL30A with an Intel GMA 4500MHD. I know that the latest ATI cards, windotosh's and high end nvidia cards all support control panel desaturation.
Why? black and white makes me 3 times more productive. https://youtu.be/NUMa0QkPzns?t=2m50s