Rear lights are pretty boring from the factory which is probably the reason why so many people choose aftermarket upgrades. To keep it legal you must have a reflector and the same lights as a standard car.
You may have 1 reverse and 1 fog light but for safety Car styling tips recommend you get 2. This particular rear light cluster has a black background and the lenses are moulded together. This is much better than the standard lights which use bands of coloured plastic to hide the bulbs. To avoid the orange reflection in the clear indicator lense you can fit orange bulbs with a silvered finish.