By Tzvi Machlin Hopefully you aren’t too attached to the old turf at Nebraska’s Memorial Stadium. Because that old turf isn’t attached to the field anymore. The Cornhuskers have finished installing the new turf at their iconic stadium. Their spring practice wound up being the final game played on the turf. HuskerOnline reporter Sean Callahan was among the first to reveal the new carpeting at Memorial Stadium. And it is a sight to see. Gone is the light-to-dark tone shifting color scheme at Memorial Stadium that would alternate every five yards. The new turf has a single tone, which leans into …