How can I adjust contrast on Apple Support Sites, etc.

Question

I have a great problem with Apple web content.  Even this attempt to type my question is plagued by the same issue: There is not enough contrast between the letters I just typed, and their back ground.   A big problem for me, as it seems the font color chosen by this apple web page and its background color chosen by this webpage, are creating an almost impossible eye strain and are terrible for people suffering from various forms of eye disease such as cataracts, makular degeneration, etc.  I am one of them.  I use Zoom for most of my computer work and generally can do everything  on my Mac. Except change this lack of contrast on any website created by Apple web designers.  Apple Update sites urging me to change my OS to Yosemite are completely  unreadable to me!  I need somebody to read its faded print to me.   I dread to change to an OS that I probably cannot read because some web designer who want to design a contrast combination that is more "far out" than the previous one.  There are millions having such eye diseases and computers are one way to let them enlarge and see things needed for their continued function.  Contrast settings in Accessibilty  Preferences do not alleviate the problem as they simply seem to make the screen brighter if increased.
Is there any Application that would let me change the contrast settings of a website designed by Apple?

Answer 1

Thanks for the hep I will contact the suggested Apple site.  As a guy who worked with Apple computers since they were black and white pack-backs its nice  to know that I am not the only one to notice that there is a big problem here. 
I experimented again with the Accessibility Preferences/Contrast settings on my MacBook Air, and discovered that If I slide the indicator to the right to "Enhance Contrast", the opposite happens on my screen: I have less contrast so that grey fonts wash out into the white back-ground more and more as the pointer is moved to the right. 
I never had to adjust the settings since I bought the MacBook with OS 10.6, and its function could have been reversed by OS upgrades since then o my present OS 10.8.5, or it could have been a problem since I bought the computer (used) from my Apple dealer. 
I never had to adjust the contrast settings until now, since my eyes became weaker, and the Apple websites started using fonts of too similar a color to the background they are printed on.
So with that in mind it could be a hardware problem such as a reversed +/- wiring connection to the screen, a reversed diode on the motherboard, or a short in the diode wiring, a reversed OS code setting that reverses the direction of the contrast setting for its control.
It could also be Malware or a Virus, which has not been detected by the OS, nor the latest Norton on my Macbook Air..