Wow this is quite a necro lol.

Well the "reflected color" controls the environment that appears in the shader's reflection when mapped. Like if you wanted the objects using the shader to reflect a sky that isn't in the scene.

The reflectivity attribute controls the shader's ability to throw back light, so this is what you're looking for in this case. However, take note of the specular color attribute as well since Maya decided to separate these two qualities. A scratched up surface with pristine highlights would look rather odd.