Meat and color changes

Can someone please put up pictures of meat that is good for consumption and what has gone off?

Ive had venison go from deep red to pale brown/greeny with no off smells in a day and some stuff thats got wet and gone pale on the drive home. How far is too far gone and what is normal color changes etc?

the nose knows......and for crying out load DONT get meat wet...if it does get it dry again ASAP.