I have been incubating a clutch of 10 carpet cham eggs since 10.14.09. Last night I noticed that one of them had shrunk about half of its size and it was sweating. I checked on it this morning and it had dimpled slightly but no slit in the egg. Upon returning home from work it has now started to turn dark in color. Im not sure if it is the shell itself of more of a translucent view to what is inside. There is some variation to the color, reddish yellow at one end and bluish brown on the other. I was reading another post about cutting the eggs open before they change color, if they havent started to come out on their own. I guess my question is, it this normal to have it change from its normal white to a darker color before hatching?