Chroma, the Greek word for color, may refer to:

In art and entertainment:

Chroma key compositing, or chroma keying, is a special effects / post-production technique for compositing (layering) two images or video streams together, used heavily in many fields to remove a background from the subject of a photo or video - particularly the newscasting, motion picture and videogame industries. A color range in the top layer is made transparent, revealing another image behind. The chroma keying technique is commonly used in video production and post-production. This technique is also referred to as color keying, colour-separation overlay (CSO; primarily by the BBC), or by various terms for specific color-related variants such as green screen, and blue screen - chroma keying can be done with backgrounds of any color that are uniform and distinct, but green and blue backgrounds are more commonly used because they differ most distinctly in hue from most human skin colors and no part of the subject being filmed or photographed may duplicate a color used in the background. It is commonly used for weather forecast broadcasts, wherein the news presenter appears to be standing in front of a large map during live television newscasts, though in actuality it is a large blue or green background. When using a blue screen, different weather maps are added on the parts of the image where the color is blue. If the news presenter wears blue clothes, his clothes will also be replaced with the background video. A complementary system is used for green screens. Chroma keying is also used in the entertainment industry for special effects in movies and videogames. The advanced state of the technology and much commercially available computer software, such as Pinnacle Studio, Adobe Premiere, and dozens of other computer programs, makes it possible and relatively easy for the average home computer user to create videos using the "chromakey" function and easily affordable greenscreen or bluescreen kits.

Wayne McGregor CBE (born 1970) is a British choreographer of contemporary modern dance. His work is highly distinctive in its vocabulary of movement, for its integration of dance with film and visual art, and for his active interest and incorporation of computer technology and biological science. He is the Artistic Director of Wayne McGregor Random Dance, Resident Company at Sadler's Wells Theatre in London; the Resident Choreographer of The Royal Ballet, appointed 2006; and the government’s first Youth Dance Champion, appointed 2008. In 2004 McGregor was a Research Fellow in the Department of Experimental Psychology, University of Cambridge.

McGregor is a frequent creator of new work for La Scala Theatre Ballet of Milan; Paris Opera Ballet; Nederlands Dans Theatre of La Hague; San Francisco Ballet; Stuttgart Ballet; New York City Ballet; The Australian Ballet of Melbourne; and English National Ballet of London. He served as Movement Director for Harry Potter and the Goblet of Fire.

McGregor was born in Stockport, England, in 1970. He studied dance at Bretton Hall College of the University of Leeds and at the José Limon School in New York. In 1992 he was appointed Choreographer-in-Residence at The Place, London, and in the same year he founded his own company, Wayne McGregor Random Dance. McGregor evolved what was to become his distinctive choreographic style on Random Dance.

Joby Talbot (born 25 August 1971) is a British composer.

Born in Wimbledon, London, Talbot studied composition at Royal Holloway and Bedford New College at the Guildhall School of Music and Drama under Brian Elias and Simon Bainbridge.

In 1993 Talbot first met Neil Hannon and began arranging and performing with his group The Divine Comedy. One of their tracks, "In Pursuit of Happiness", was used as the theme music for BBC TV's Tomorrow's World.

Other works for television written by Talbot include the theme music for Young Musician of the Year, and the music for the BBC 2 comedy series The League of Gentlemen, which was awarded the Golden Rose at the Montreux International TV Festival.

During 2004, Talbot was Classic FM's first resident composer. Talbot wrote a new piece of music, scored for up to five instruments, each month for the year of his residence. These pieces have also been premiered and playlisted on Classic FM. The twelve compositions form part of a larger piece, released on a CD entitled Once Around the Sun on 23 May 2005.

Artem Ovcharenko (Russian: Артем Овчаренко) (31 December 1986, Dnipropetrovsk, USSR) is a ballet dancer and leading soloist of the Bolshoi Theatre.

Artem began his ballet study when he was 11 years old, in the Dnipropetrovsk State Choreographic School. At the age 17 he entered the Bolshoi Ballet Academy (his teacher was Alexander Bondarenko). He participated in the academy tours to the U.S., Greece, Germany, China and other countries.

In 2007, after graduating from the Bolshoi Ballet Academy, he was admitted to the Bolshoi Ballet in the corps de ballet, rehearsing under the guidance of Nikolay Tsiskaridze. One year later he danced the leading role in the ballet "The Nutcracker". Since 2009, his teacher-coach is the People's Artist of USSR Nikolai Fadeyechev.

In 2009, he participated in the premiere of the ballet "Spell of Escher" (ru:Заклятие рода Эшеров, choreography by Vladimir Vasiliev) in the Festival of the Russian National Orchestra at the Bolshoi Theatre. In 2010 he took part in the International Festival "World Ballet Stars" in Donetsk. In January 2011, he presented with Nina Kaptsova in the 6th Prague Ballet Gala,and in August together with Anna Tikhomirova, performed in the closing gala-concert of the 8th Congress of the World Federation of UNESCO Clubs, Centres and Associations in Hanoi.