YOU SAID:

i have brown hair so i must be yellow

INTO JAPANESE

私は黄色でなければならないので、私は茶色の髪が

BACK INTO ENGLISH

Since I have to be yellow, I have brown hair

INTO JAPANESE

私は黄色でなければならないので、私は茶色の髪

BACK INTO ENGLISH

Because I have to be yellow, I have brown hair

INTO JAPANESE

私は黄色でなければならないので、私は茶色の髪

BACK INTO ENGLISH

Because I have to be yellow, I have brown hair