For all the strides New Jersey’s redistricting commission made in redrawing the state’s legislative map this month, the final product “over-represents white people” and “actively diminishes the voices of communities of color,” according to a group of advocates. The map released last week splits the state into 40 legislative districts — 17 with a population in which the majority of residents are people of color, and 23 in which the majority of residents are white. That’s up from the 15 majority-minority districts in New Jersey’s current legislative map. But Fair Districts New Jersey, a nonparti…