My cocoa powder is not dark. Is it still dutch processed?
Dutch processed cocoa is "washed" with a potassium carbonate solution to neutralize the acidity to a pH of 7.  While it does give cocoa a richer hue, the color can range quite a bit from a light reddish brown to a dark brown.  Color is less an indicator than the label on the product.  The process is used to provide a more mellow flavor.