Transparency Sets how transparent the material should be. You can set a specific color to be transparent, so that only the green parts of an object is transparent. Cosine Power Defines how wide or narrow the specular highlight on the material should be. The higher the value, the narrower highlight. Specular Color Sets the color of the highlight.
Reflectivity Defines how much the material reflects.
Most real-world materials don't reflect all that much, and it should be set to 0.000. This will also make rendering go faster. This defines which colors the material will reflect. Now close the Hypershade window.