His Greenness lost his greenness...

Photo from today; I used to call him "his Greenness" when he was still a green caterpillar (one week ago or so), but now it does not seem an appropriate name anymore...
He is not moving anymore, stopped eating parsley, lost his green color completely; his look now reminds me of a lump of candle wax; the texture  looks a bit grainy (click on the photo to enlarge)...I am not sure whether it is completely "normal", perhaps there are parasites inside?...Brr...Or am I worrying without any need?
Time will tell...
Yes, now I know, that grainy structures are actually cocoons of wasp parasites! The green caterpillar is no more!