When it comes to automated lighting for your home or work space I can highly recommend the Philips Hue system. This sophisticated Led lighting system is the ideal choice for variable and automated lighting tasks.
Via wireless connection you can, besides switching on and off, change the brightness and the colour of the lights. The system is even programmable, so that you can schedule different light scenarios.
By adding an additional controller (Hue Bridge) you can even control more lights and connect your lighting system to your home automation central. Due to its easy network API it is integrateable into many home automation environments.
Besides stand alone lamps Philips meanwhile offers many extensions like LED panels or even outdoor and garden lights. Although it is not the cheapest system the high quality standard speaks for itself.