Veiled Chameleon Age???

[VeiledFlash]

Hello everyone! I bought a new Veiled Cham about a couple weeks ago. The pet store I bought him at is a local, family owned store and their "reptile guy" that does the ordering doesn't know how old they are when they get them in. They only label them as juvenile and adult (adult being the bigger ones). If anyone has any idea, that would be great! Thanks!!

 

[zlew]

Maybe about 6 months old, based on color development. However, it is hard to get a feel for his size in that picture.