simplified constructor param description

docs/api/helpers/HemisphereLightHelper.html

@@ -35,9 +35,7 @@ scene.add( helper );
 
 			[page:Number size] -- The size of the mesh used to visualize the light.<br /><br />
 			
-			[page:Hex color] -- (optional) by default the helper will take the color of the light.
-				In cases where this makes the helper difficult to see 
-				(for example a white light against a white background) you can directly set the color here. 
+			[page:Hex color] -- (optional) if this is not the set the helper will take the color of the light.
 		</div>
 
 

docs/api/helpers/PointLightHelper.html

@@ -43,9 +43,7 @@
 
 		[page:Float sphereSize] -- (optional) The size of the sphere helper. Default is *1*.<br /><br />
 
-		[page:Hex color] -- (optional) by default the helper will take the color of the light.
-			In cases where this makes the helper difficult to see 
-			(for example a white light against a white background) you can directly set the color here. 
+		[page:Hex color] -- (optional) if this is not the set the helper will take the color of the light.
 		</div>
 
 		<h2>Properties</h2>

docs/api/helpers/RectAreaLightHelper.html

@@ -33,9 +33,7 @@ scene.add( helper );
 		<div>
 			[page:RectAreaLight light] -- The light being visualized.<br /><br />
 
-			[page:Hex color] -- (optional) by default the helper will take the color of the light.
-				In cases where this makes the helper difficult to see 
-				(for example a white light against a white background) you can directly set the color here. 
+			[page:Hex color] -- (optional) if this is not the set the helper will take the color of the light.
 		</div>
 
 

docs/api/helpers/SpotLightHelper.html

@@ -39,9 +39,7 @@
 		<div>
 			[page:SpotLight light] -- The [page:SpotLight] to be visualized. <br /><br/>
 			
-			[page:Hex color] -- (optional) by default the helper will take the color of the light.
-			In cases where this makes the helper difficult to see 
-			(for example a white light against a white background) you can directly set the color here. 
+			[page:Hex color] -- (optional) if this is not the set the helper will take the color of the light. 
 		</div>