consistent naming, hex => color

docs/api/lights/DirectionalLight.html

@@ -60,7 +60,7 @@ scene.add( directionalLight );
 
 		<h2>Constructor</h2>
 
-		<h3>[name]( [page:Integer hex], [page:Float intensity] )</h3>
+		<h3>[name]( [page:Integer color], [page:Float intensity] )</h3>
 		<div>
 			[page:Integer color] - (optional) hexadecimal color of the light. Default is 0xffffff (white).<br />
 			[page:Float intensity] - (optional) numeric value of the light's strength/intensity. Default is 1.<br /><br />