what is the difference of the blue diamond iguanas. the ones from petco all have turquoise bellies. some have some white striping as well. i also have 2 real true blues and looking at the underside of the petco ones and mine, they are very similar. I have one (not from petco) and it is almost always some form of blue or turquoise regardless of lighting. i believe it is about a year old or close to it.