title: Set up sky sphere to be bright white in UE4
body: <p>I'm trying to set up a plain white background for my Unreal Engine 4 game. I've tried experimenting with the sky sphere (setting all colors to #FFFFFF and setting cloud opacity and star brightness to 0.0). The background remains a dull gray color at best. (If I add stars, the stars are bright white, against the dull gray background).</p>
  
  <p>How do I set up the sky sphere (or perhaps atmospheric fog) to create a bright white background?</p>
  
  <p><img src="https://i.stack.imgur.com/7ZuZA.png" alt="White Sky Sphere"></p>