I make 10 gallon mashes:
Ingredients:
12.5 pounds raw cane sugar
9 gallons water
160 oz. unsulphured molasses
After fermentation my mash is a brown color- pretty dark- not quite black. Yours might not be as dark as you did not use molasses- but I figure brown cane sugar would add some color. The color is really not that important as long as fermentation finished. It will be clear after distillation.