Xanthophores (reds and blues)
Iriodophores (yellow)
Melanophores (black)
These are the pigments that make up the Anoles look. Blues and Yellow are the most active, blue and yellow makes green. As for the melanophores, they are only active when the anoles is stressed, cool, and basking-making the skin darker(brown). The the black pigment (melanophores) is absent the lizard would be lime green (albino). When the yellow pigment is absent the anoles are blue, these are really rare. Ive never seen a true blue anole but I have seen the blue-greens which would later turn green or brown (back to normal). Ive seen a picture of a blue anole on Reptiles USA magazine but personally I dont thats the true blue anole, it seemed more blue-green.
By the way its been a while since Ive ooked into animal pigments so I might have gotten the xanthophores and Iriodophores mixed up, or miss-spelled them.