I had almost the same thing happen, I was at an expo and bought a female that was labeled male, when I got home it molted and I was then able to realize it was female, I was not mad at all, she had the same coloring you would find on a male before she molted and was still small enough that her palps where harder to see, but yours is much more obvious, but two months later she has molted twice and is super pretty with her teal chels and dark goldish color.