There can be quite intense female colouration in certain circumstances. One need not to take ornaticauda where te female could even look like a male during courtship. I once had a trio of P. tweediei. The male died and the two tweediei females fought which is dominant. After some time, the dominant female looked like a subdominant male. It was a striking experience, because this colouration lasted for weeks. If I did not know it was a female I should have thought it to be a weak male. And you know that tweediei has striking colours!
But nevertheless I think your animal is a male and not a female. Time will show. For long times young or subdominant males do not show the full splendour. There must not be another male present; it is sufficient to have females which enforce their needs.