Try this to fix your yellow problem. Custom White Balance. Take a picture of someone or something in the room you are wanting to take pics in. Then go to Custom White Balance, it will ask you to pick a picture, pick that one, then set. You will see an amazing difference! Trust me, I had the same problem. I do that everytime now and my pics look great.
Also, invest in a flash. I think you can pick one up for $100. Lighting won't be as harsh and no more red eye!
