Here is Ginevra at 8 days,
5 weeks,
and 9 weeks.  

 This shows the progression of the roan color from white, to dark roots and you can see on my website what she looked like at 3 months when I flew to Italy to pick her up and the following stages to her final dark brown/roan color at maturity.  As with any dog, the coat color changes a bit from time to time for a long time.  http://www.lagottaz.com

My brown dogs are always lighter when I first trim and darken as the guard hairs grow out.  Ginevra gets lighter hairs in the places that once were white.