“I don’t know Pharrell he wears pastel colors”. Pastel colors are fruity and bright he’s calling him gay and weird.
In contrast to Nas he says about himself “I wear the pain of Soledad Brothers and chrome gat busters” which means Nas is street and conscious he’s calling himself a real nikka.
And he says I don’t know him? When you saying they had a working relationship. It’s a clear diss I don’t know where you from but where I’m from talking about what another man is wearing is dissing that man. What is the purpose of even bringing Pharrell up at all?
It doesn't sound like Nas was calling Pharrell fruity. Being gay isn't the opposite of being street conscious. Nas is talking about more than fashion when he talks about wearing the "pain of Soledad brothers and Chrome gat busters". He could simply be saying Pharrell is "soft" in comparison to himself.
I didn't take it as a diss because again, it sounded like Nas had an exchange with Pharrell and Pharrell did or said something that made him question him hence "I ain't fronting, I don't know Pharrell". "Frontin" is a play on Pharrell's song featuring Jay. Also Pharrell had his line of clothes and shoes BBC Ice Creams which were a lot of pastel colors. Nothing gay about it.