that seems pretty high to me also, heres my settings on my TH-42PX60U in a fairly dark setting.
Picture -5
Brightness -10
Color -7
Tint 0
Sharpness -20
Color Temp - Normal
Color Mng. - Off
Just watched Aeon Flux and damn this TV is just amazing, If its not the TV then its gotta be my Oppo DVD player then