Move Float x MaterialColor operator

src/main/kotlin/MaterialColor.kt

@@ -11,4 +11,6 @@ data class MaterialColor(val r: Float, val g: Float, val b: Float) {
     companion object {
         val Black: MaterialColor = MaterialColor(0f, 0f, 0f)
     }
-}
+}
+
+operator fun Float.times(rhs: MaterialColor) = MaterialColor(this * rhs.r, this * rhs.g, this * rhs.b)

src/main/kotlin/Ray.kt

@@ -1,6 +1,5 @@
 import java.io.File
 
-operator fun Float.times(rhs: MaterialColor) = MaterialColor(this * rhs.r, this * rhs.g, this * rhs.b)
 
 data class Ray(val origin: Point, val direction: Vector) {
     fun at(t: Float) = origin + t * direction