Starrynight, I'm having a similar problem with my camera as the other poster.
It lightens all the colors or casts a yellow tone to them. Black fabric always looks faded, royal blues look purple and oranges come out yellow! It's totally goofy.
I will see if my camera has the exposure thingie you speak of. I hope that helps!! I'm ready to trash my Olympus C-765 in the trash and start over!