"If they are purple, I am not buying them."
Translation:Jeśli są fioletowe, nie kupuję ich.
I think this is the great difficulty about gender in Polish. In the plural , the masculine personal (ONI) is applied only to people. Male non-personal is included with the feminine and the inanimate (ONE). Only in the singular is made separation of genres between personal males and living non-personal males. If in a group is included at least one man, the correct pronoun is ONI. Otherwise it will be ONE. For an extreme example: a group of 10 male dogs will be ONE, because there is no human penis in that group. A group of women will be ONE, of course. A group of objects, male or female, will be ONE as well. A group mixed of women, male dogs and female objects is ONE. ONI requires the necessary presence of at least one human penis.