Update ModuleRestockHeatEffects to fix instantiation issues

Untested (will test when I get home)

Source/Restock/ModuleRestockHeatEffects.cs

@@ -13,7 +13,7 @@ namespace Restock
         [KSPField] public string shaderProperty = "_EmissiveColor";
 
         // animation curve for the red channel
-        [KSPField] public FloatCurve redCurve= new FloatCurve();
+        [KSPField] public FloatCurve redCurve = new FloatCurve();
 
         // animation curve for the green channel
         [KSPField] public FloatCurve greenCurve = new FloatCurve();
@@ -42,7 +42,7 @@ namespace Restock
         // should the module disable the stock blackbody glow effect on the included renderers?
         [KSPField] public bool disableBlackbody = false;
 
-        [KSPField] public List<Renderer> renderers = new List<Renderer>();
+        public List<Renderer> renderers = new List<Renderer>();
 
         private readonly string _shaderBlackbody = "_TemperatureColor";
 
@@ -54,13 +54,16 @@ namespace Restock
 
         private double _lerpRange;
 
-        private Color _emissiveColor = new Color();
-        private MaterialPropertyBlock _propertyBlock = new MaterialPropertyBlock();
+        private Color _emissiveColor;
+        private MaterialPropertyBlock _propertyBlock;
 
         public void Start()
         {
             if (base.vessel == null) return;
 
+            _emissiveColor = new Color();
+            _propertyBlock = new MaterialPropertyBlock();
+
             if (enableHeatEmissive)
             {
                 if (useCoreTemp)