Licensing Agreement

Dialight PLC
20 June 2006

Date:                   Immediate release, Tuesday 20 June 2006



Contacts:               Roy Burton - Group Chief Executive
                        Cathy Buckley - Finance Director
                        Dialight plc
                        Tel:  [phone]



                        Alistair Mackinnon-Musson
                        Nicola Savage
                        Hudson Sandler (PR to Dialight plc)
                        Tel:  [phone]
                        Email:  [e-mail]


                                    DIALIGHT PLC


                 LICENSING AGREEMENT SIGNED WITH COLOR KINETICS



Dialight Subsidiary licenses Color Kinetics' patent portfolio to advance market
                    adoption of LED color mixing technology


Dialight plc (FTSE: DIA.L) the UK listed leader in Applied LED Technology today
announces that its US subsidiary, Dialight Corporation, will license Color
Kinetics' worldwide patent portfolio to support the accelerated development of
Dialight's LED application initiatives in the architectural, entertainment and
general illumination markets. The worldwide licence applies to sales in all
markets covered by Color Kinetics' patent portfolio. The agreement also provides
Color Kinetics with access to Dialight's patents as they may relate to
enhancements to Color Kinetics' technology.



Dialight Corporation specialises in the application of LED-based lighting
technology and has a broad range of expertise that enables its OEM partners to
develop complete LED-based lighting solutions. Through its agreement with Color
Kinetics, Dialight Corporation will now be able to offer its partners the unique
features that are covered by Color Kinetics' patents - complementing Dialight's
own SpectraMix(R) control system and associated intellectual property.



Roy Burton, Group Chief Executive of Dialight said:



'Following the acquisition of Lumidrives by Dialight plc in January 2006, to
take us into the European solid-state lighting market, we view the Dialight
Corporation agreement with Color Kinetics as an important next step in driving
forward our initiatives in the North American market for Solid State Lighting in
architectural, entertainment and general lighting applications.  We also believe
this agreement will be a major factor in stimulating the adoption of LED
technology by our OEM lighting fixture partners.'



Bill Sims, President and CEO of Color Kinetics added:



'We're very pleased to support Dialight Corporation in its plans to enter new
markets with intelligent LED lighting offerings.  We believe there are many
market opportunities for this technology that will continue to grow through
third-party product development. Our mission, in part, is to fuel that growth
through licensing relationships built on our strong intellectual property.'





                                   -  ENDS  -





Notes To Editors:



About Dialight plc



Dialight plc (FTSE: DIA.L) is one of the world's largest suppliers in the field
of Applied LED Technology. It operates in two principal segments:  Components
where low brightness LEDs are used for status indication in electronic
equipment; and Signals/Illumination which utilises the latest high brightness
LED technology for Traffic and Rail Signals, Obstruction Lighting, Hazardous
Location Lighting and for developing applications in more general illumination
markets, including architectural and entertainment uses. Dialight plc has
operations in The United Kingdom, Germany, the United States and Mexico. More
information is available at:  www.dialight.com.



About Color Kinetics


Color Kinetics Incorporated (NASDAQ: CLRK) transforms environments through new,
dynamic uses of light. Its award-winning lighting systems and technologies apply
the benefits of LEDs as a highly efficient, long lasting, environmentally
friendly, and inherently digital source of illumination - reinventing light
itself as a highly controllable medium. Color Kinetics also enables widespread
adoption of LED lighting through OEM and licensing partnerships in diverse
markets. The company is headquartered in Boston, MA with offices in the UK,
China, and Japan.  More information is available at:  www.colorkinetics.com.




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