The breeder i got him from said he is bi-color. I hear bi color and i automatically think black with brown on the forearms down haha I know dogs coats change over time. But his brown is on the inside of his legs and inbetween his toes. Its more now than when he was 13 wks old (he is 6 mo old now). Do you think that the brown will continue to become more and more? Would YOU consider him bi-color?