Images displaying differently in Safari

[gfxhelp.com]

I have a background image which has a gradient and then ends on the color #444444. The background color is #444444 so it blends perfectly. It works in IE6/7/8, FF 2/3, Chrome, etc etc, but when viewing the site in Safari on a mac it has color issues. With Safari on windows it works fine, it's only on a mac.

Anyways, attached is a screenshot of what's happening, it shows a FF and Safari next to each other. Is anyone familiar with this issue and have you found a solution? If you have Safari on a mac and want to see what I mean, my site is http://www.GFX-Help.com .