From what I understand after talking with a few arachnologists active in the invertebrate hobby, as well as some close friends/breeders...G. rosea was reclassified into two separate species. I am still confused on this somewhat, as some people don't agree with the reclassification, some have never heard of it, and some quote it like the holy bible.

There is the common Chilean Rose (G. porteri) found throughout the pet trade, showing the common metallic browns, purples, and blacks. Then there is the much rarer Red Rose Tarantula (G. rosea) which exhibits pinks, reds, fuschias, and blacks.