These are typically indicators the roasting is total.  If it will get as well darkish brown, you might have burnt it. After the sugar is additional in, it lightens to a lovely light brown color.?? ????? ????? ??? ? ??? ?? ?? ???????? ???? ???? ????? ????? ?? ???? ??? ? ??? ??? ?????????? ?? ???? ?? ?? ???? ??? ???? ?????? ?? ??????? ??????????