Press Release

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COLOR KINETICS EXPANDS LINE OF DIGITAL LIGHT ENGINES Versatile OEM assemblies extend Color Kinetics' proven technologies to third party manufacturers Boston, MA - December 10, 2004 -Color Kinetics Incorporated (NASDAQ: CLRK) today demonstrated continued support for the accelerating adoption of intelligent solid-state lighting with the expansion of its Digital Light Engine (DLE) line. The integrated OEM assemblies extend Color Kinetics' proven technologies to manufacturers seeking to cost-effectively develop and deliver intelligent solid-state lighting systems that meet diverse application demands. Color Kinetics has an open, active approach to forming OEM and licensing partnerships with manufacturers who recognize the value and increasingly prevalent role of intelligent solid-state lighting -- both within and beyond the traditional lighting market. The DLE offering comprises Color Kinetics' core knowledge, experience, technologies, intellectual property and services to speed partners' time to market with complete lighting systems. DLEs are available in various shapes and sizes for simple integration with third party product designs, including three newly released versions that further expand the range of possible applications. These include: DLE L-101 - A linear module incorporating 24 surface mount LEDs at a 120° x 120° beam angle; available in 12" (30.5 cm) and 6" (15.2 cm) lengths. It is well suited for wall grazing, alcove lighting and marker lighting. DLE L-103 - A 12" (30.5 cm) linear module incorporating 54 surface mount LEDs at a wide beam distribution of 180° x 180°. It is also well suited for wall grazing, alcove lighting and marker lighting. In addition to the LED-based lighting modules, partners may leverage Color Kinetics' comprehensive training, reference materials, and services to ensure successful technology integration into existing fixtures, or to enable completely new fixture designs. DLEs are compatible with Color Kinetics' broad line of power, control, and authoring technologies, as well as standard DMX control and authoring systems. The three new DLEs are now available. Contact Color Kinetics' OEM and Licensing group at 888-FULLRGB or oemlic@colorkinetics.com for additional information. About Color Kinetics Color Kinetics Incorporated (NASDAQ: CLRK) is a pioneer in the design, marketing and licensing of intelligent solid-state lighting systems and technologies. The company's award-winning product lines apply the practical and aesthetic benefits of LEDs to transcend the limits of traditional light sources for use in high-performance lighting and OEM and licensing applications. Its products and technologies leverage a patented layer of digital intelligence, called Chromacore®, to generate and control millions of colors and dynamic lighting effects. Color Kinetics holds 37 patents and has over 120 patent applications pending that apply to many aspects of solid-state lighting technology. Founded in 1997, the company is headquartered in Boston, MA with offices in the UK, China, and a joint venture in Japan. More information can be found at www.colorkinetics.com. “Safe Harbor” Statement under the Private Securities Litigation Reform Act of 1995: Statements in this Annual Report regarding Color Kinetics Incorporated’s business that are not historical facts are “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Readers are cautioned that these statements involve risks and uncertainties, are only predictions and may differ materially from actual future events and results. For a discussion of such risks and uncertainties, see “Risk Factors” in the Company’s Registration Statement on Form S-1, File Number 333-114386, and in its Annual Report on Form 10-K for the Twelve Months Ended December 31, 2004, each as filed with the Securities and Exchange Commission. Contact Info
Felicia Spagnoli: fspagnoli@colorkinetics.com Media Relations Color Kinetics Incorporated 781-418-9292	Justine Alonzo: jalonzo@colorkinetics.com Investor Relations Color Kinetics Incorporated 781-418-9272