By Kirk O’Neil Universal and Disney are bringing all new and old favorite Halloween celebrations to their theme parks. You say it’s too early to start thinking about Halloween? That’s not true for Comcast (CMCSA) – Get Comcast Corporation Class A Report -owned Universal Studios and Walt Disney (DIS) – Get Walt Disney Company Report theme parks. Both companies recently rolled out their plans for the Halloween season that, in some cases, might send chills down your back. Disney World in Florida is getting started early by promoting its “Halfway to Halloween” celebrations that will introduce gues…