ArrowHelper: Clean up

docs/api/en/helpers/ArrowHelper.html

@@ -68,9 +68,9 @@
 
 
 
-		<h3>[method:null setColor]([param:Number hex])</h3>
+		<h3>[method:null setColor]([param:Color color])</h3>
 		<p>
-		hex -- The hexadecimal value of the color.<br /><br />
+		color -- The desired color.<br /><br />
 
 		Sets the color of the arrowHelper.
 		</p>

docs/api/zh/helpers/ArrowHelper.html

@@ -67,10 +67,9 @@
 		<p>请到基类 [page:Object3D] 页面查看公共方法.</p>
 
 
-
-		<h3>[method:null setColor]([param:Number hex])</h3>
+		<h3>[method:null setColor]([param:Color color])</h3>
 		<p>
-		hex -- 16进制颜色值.<br /><br />
+		color -- The desired color.<br /><br />
 
 		设置箭头辅助对象的颜色.
 		</p>

src/helpers/ArrowHelper.d.ts

@@ -22,6 +22,6 @@ export class ArrowHelper extends Object3D {
 
 	setDirection( dir: Vector3 ): void;
 	setLength( length: number, headLength?: number, headWidth?: number ): void;
-	setColor( color: Color ): void;
+	setColor( color: Color | string | number ): void;
 
 }