if it is implantation bleeding the pinker the color could indicate active implantation, if the
implantation bleeding is
brown in color it could indicate
implantation that happened a while ago, it just took a little longer for the blood to break through.
of course all the stuff mentioned above is IF it is implantation bleeding. brownish discharge could also indicate that your period is coming.
if you suspect it is implantation bleeding, wait a few days and take a hpt.