The shedding process can take a week or two. The longest I've had was two weeks, but I wouldn't put three out of the question for a larger one.
They basically look just like that. Partially out, but lacking the right color and drooping to varying degrees. The part that often throws people off with Kenya's and Colt's is that they often partially extend while shedding, so they appear sick or like they are struggling. Then suddenly one day the skin is peeling off, the color is back and its going through a growth spurt.