Hmmmm...I guess I spent a month reading about a different story than you. Some times I really wonder.
The problem is people not being specific about "they."
What you saw were dozens and dozens of "experts" and "profilers" with no connection to the case on Fox and CNN and MSNBC speculating the snipers were white.
And the aformentioned WingNutDaily article about the guys in the (now known to be mythical) white truck being olive-skinned or Hispanic.
The bottom line is Chief Moose never got up and said "hey, we're looking for white guys." He got up repeatedly and said they were looking for a white truck or white van.