Heh, fooled indeed. Look at this.
Believe me or not, but fields A and B have the *exact* same shade of grey.
Don't believe me? Put the image into an image editor and sample both using the color picker. The results will be identical. Have fun and be amazed if you never looked into this stuff before:
http://scienceblogs.com/startswithab...-a-question-o/
Now you know why I'm often sceptical if people say "My screen is yellow / green / pink / blue / whatever", without actually *measuring* it using a tool such as a spectrometer