At first glance it looks to me like your camera is only recording one of the three colour channels. Do you have any red ones like the green and blue examples?
You could get colour casts like those from white balance problems - camera set to tungsten in the first one and fluorescent in the second but they seem too strong for that.
There are ways of minimising the casts but you'll need something like photoshop to do it. I don't have time to post up the method at the moment but I can do it later if you want it. You could make reasonable black and whites from them as a last resort.
Last edited by backofbeyond; 16 Nov 2007 at 17:25.