Weirdly glowing/shaded chunk

[BrokenEye]

Title: Weirdly glowing/shaded chunk

Version: 1_0_3

OS: Windows 7

Java Version: Version 7 Update 21

Description of Problem:

I don't know if this is a bug or if I accidentally activated something from one of the mods, but I accidentally pressed some button or other and now every chunk except the one I'm in has slightly dropped colour saturation, and its very offputting, and I can't make it stop doing that. I tried hitting every button, but none of them turned it off. I exit and relaunch, but it won't go away. Here's a picture:

Error Messages:

Error Log:

[theprolo]

You've activated the chunk grid. I think F9 is the default button to toggle that, so tap it until it cycles through all the chunk grid options and turns it off.