Now that ColorStudio HD and the iMarker are actually in stores, we have mostly good news to report. Griffin’s and Crayola’s total package does, in fact, break new ground when considered either as a whole, or on the merits of its separate pieces. Judging by our testing experiences since our review unit arrived two weeks ago, kids are going to really enjoy ColorStudio HD using iMarker—and parents are probably going to hope for other…