Someone in the link above says, "Did you not see this picture? It's far more contrast than Windows XP had, ever:" There must be something wrong with my monitor or eyes, because the only difference in Win 7 is a bit of saturation:
But in XP one is in black and white, while the other is in colour. You judge for yourself which has more contrast.
You CAN set the Title bar to custom colours. But, although it says "Colors and sizes selected here apply only if you have selected the Windows 7 Basic theme or an Ease of Access theme.", that is blatantly NOT TRUE and it only works in the Classic theme. http://www.sevenforums.com/general-discussion/176167-title-bar-active-window-colors.html
Update 5 Oct 12