I just got a 30D for Christmas so I'm still getting used to it and changing with a lot of settings. Today I took it to my local trails to do some normal mtb shooting, but the weather is horrible, gray sky all day. I shoot with 2 flashes remotely, a canon 430EX and a 430EZ. What I'm trying to do is get some more warmth and color in these shots with this kind of weather. Here's an example of what I'm talking about. I was shooting 1/160 and f4.5 ISO 320. Flashes both at 1/2 power, one to the left of the landing ramp and one to the right. One thing I'm curious about is the color temperature under the menu, mine is at 5600K and I'm not sure what it should be set at.