So, I find that a decent photo package on the computer is a godsend at times, and am posting this to show a friend what I mean.... white balance!!
The photo's and the cookies are both hers and not mine - sadly!!
It's saved many a photo of mine from the recycle bin!
You can achieve the same or better results by setting the white balance on the camera for the light settings you're photographing in. It really does make all the difference to your pictures and is very easy once you know which buttons to press. Let's face it, even I got the hang of it!!