You said you would see what happens in a week or two. I would suggest that you give it at least three months to see what happens. Three weeks is way too soon, you have to really give it a chance. Also, blonde beards usually take a little longer to develop. It is also common to have different colors in beards, especially blond beards. Good luck with it and keep posting photos. It makes it easier to see progress when you can go back and see the beginning photos.

My Beard Journey:  http://jefffsbeardboard.yuku.com/topic/25137/Finally-I-have-a-Beard
Beard and Bald Thread:  http://jefffsbeardboard.yuku.com/topic/27831/Beard-bald-head-shaved-head-or-buzzcut
Patchy Beard Success Stories:  http://jefffsbeardboard.yuku.com/topic/33742/Patchy-Beard-success-stories-Before-and-After-photos#.ViujbH7nuM8
Taming the Wild Mustache:  http://jefffsbeardboard.yuku.com/topic/30822/Taming-the-Wild-Stache#.Vj_Mh7erTIU