Afrock rescue, pics

[Jezabel]

Tonight I got a call from a friend that need help to get some abandon snakes off an appartment. They where 5 (2 bci, an anaconda, a burmese and an afrock) in only one 72"X18" tank. Exept for the afrock, that's the worst one, they're all in ok shape, only on the thin side. Can a snake lose it's color from been too sick? Never heard of this but, maybe like anemia? The one I've alway seen are brown, this one has a green head and a silver/yellow/greenish body. He has some scab cover with stuck shed one 3-4 spot but no left over shed on his whole body to change the color that much. Here's a few pics, is it it's normal color?







And some of the other one