I think that Jason is right.
Zealand, the New Flag should have black in the background, 2. If the Flag has half black background, why not adding blue stars, because it represent the natural environment; the night with blue stars in dark sky. It creates naturalpleasure to human visualsense. 3. Reduce the flag colours to 3, which are blue, black and white, the simplicity is better for flag design. Thus, there is no need for red colour in NZ flag, we're not communist state, red only create visual disturbance to our eyes.