Colors not showing accurately on ThinkVision monitor

[dhinged]

I'm using the Lenovo ThinkVision L1711p monitor and it isn't showing certain colors or colors accurately. It looks neon-y and for instance if I do a Google search, the highlighted ads aren't highlighted (just a white background instead of the pink) and the Google search bar is white instead of gray.

I've tried everything; updating or reinstalling drivers, configuring the monitor, adjusting ATI settings... it's connected through VGA to the ATI Mobility FireGL V5250 graphics card. My other monitor (Dell 15") through VGA looks fine. I'm at a loss.