0_Wizard
I really love the color blue, it is between violet and green on the spectrum of visible light.
It lies between violet and green on the spectrum of visible light.
chosen_Blue_0
Blue
chosen_topic_0_Blue
Ultraviolet
Ultraviolet (UV) is an electromagnetic radiation with a wavelength from 10 nm to 400 nm, shorter than that of visible light but longer than X-rays. UV radiation constitutes about 10% of the total light output of the Sun, and is thus present in sunlight. It is also produced by electric arcs and specialized lights, such as mercury-vapor lamps, tanning lamps, and black lights. Although it's not considered an ionizing radiation because its photons lack the energy to ionize atoms, long-wavelength ultraviolet radiation can cause chemical reactions and causes many substances to glow or fluoresce. Consequently, the chemical and biological effects of UV are greater than simple heating effects, and many practical applications of UV radiation derive from its interactions with organic molecules.
Color
Color (American English) or colour (Commonwealth English) is the characteristic of human visual perception described through color "categories", with names such as red, blue, yellow, green, orange, or purple. This perception of color derives from the stimulation of cone cells in the human eye by electromagnetic radiation in the spectrum of light. Color categories and physical specifications of color are associated with objects through the wavelength of the light that is reflected from them. This reflection is governed by the object's physical properties such as light absorption, emission spectra, etc.
Fluorescent lamp
A fluorescent lamp, or fluorescent tube, is a low-pressure mercury-vapor gas-discharge lamp that uses fluorescence to produce visible light. An electric current in the gas excites mercury vapor, which produces short-wave ultraviolet light that then causes a phosphor coating on the inside of the lamp to glow. A fluorescent lamp converts electrical energy into useful light much more efficiently than incandescent lamps. The typical luminous efficacy of fluorescent lighting systems is 50–100 lumens per watt, several times the efficacy of incandescent bulbs with comparable light output. Fluorescent lamp fixtures are more costly than incandescent lamps because they require a ballast to regulate the current through the lamp, but the lower energy cost typically offsets the higher initial cost.
Violet (color)
Violet is the color at the end of the visible spectrum of light between blue and the invisible ultraviolet. Violet color has a dominant wavelength of approximately 380-450 nanometers. Light with a shorter wavelength than violet but longer than X-rays and gamma rays is called ultraviolet. In the color wheel historically used by painters, it is located between blue and purple. On the screens of computer monitors and television sets, a color which looks similar to violet is made, with the RGB color model, by mixing red and blue light, with the blue twice as bright as the red. This is not true violet, since it is composed of multiple longer wavelengths rather than a single wavelength shorter than that of blue light.
Fluorescence
Fluorescence is the emission of light by a substance that has absorbed light or other electromagnetic radiation. It is a form of luminescence. In most cases, the emitted light has a longer wavelength, and therefore lower energy, than the absorbed radiation. The most striking example of fluorescence occurs when the absorbed radiation is in the ultraviolet region of the spectrum, and thus invisible to the human eye, while the emitted light is in the visible region, which gives the fluorescent substance a distinct color that can only be seen when exposed to UV light. Fluorescent materials cease to glow immediately when the radiation source stops, unlike phosphorescence, where they continue to emit light for some time after.
Infrared photography
In infrared photography, the film or image sensor used is sensitive to infrared light. The part of the spectrum used is referred to as near-infrared to distinguish it from far-infrared, which is the domain of thermal imaging. Wavelengths used for photography range from about 700 nm to about 900 nm. Film is usually sensitive to visible light too, so an infrared-passing filter is used; this lets infrared (IR) light pass through to the camera, but blocks all or most of the visible light spectrum (the filter thus looks black or deep red). ("Infrared filter" may refer either to this type of filter or to one that blocks infrared but passes other wavelengths.)
Blacklight
A blacklight (or often black light), also referred to as a UV-A light, Wood's lamp, or simply ultraviolet light, is a lamp that emits long-wave (UV-A) ultraviolet light and not much visible light. One type of lamp has a violet filter material, either on the bulb or in a separate glass filter in the lamp housing, which blocks most visible light and allows through UV, so the lamp has a dim violet glow when operating. Blacklight lamps which have this filter have a lighting industry designation that includes the letters "BLB". This stands for "blacklight blue", which is a contradiction in that they are the type that does "not" look blue.
1_Apprentice
I like blue as well.  Green is my favorite color though.
0_Wizard
Most blues contain a bit of other colors, like azure contains some green and ultramarine some violet
Most blues contain a slight mixture of other colors; azure contains some green, while ultramarine contains some violet.
chosen_Blue_0
Blue
chosen_topic_0_Blue
Blue
Blue is one of the three primary colours of pigments in painting and traditional colour theory, as well as in the RGB colour model. It lies between violet and green on the spectrum of visible light. The eye perceives blue when observing light with a dominant wavelength between approximately 450 and 495 nanometres. Most blues contain a slight mixture of other colors; azure contains some green, while ultramarine contains some violet. The clear daytime sky and the deep sea appear blue because of an optical effect known as Rayleigh scattering. An optical effect called Tyndall scattering explains blue eyes.
Blue–green distinction in language
Many languages do not distinguish between what in English are described as "blue" and "green" and instead use a cover term spanning both. To describe this English lexical gap, linguists use the portmanteau word "grue", from "green" and "blue", which the philosopher Nelson Goodman coined in his 1955 "Fact, Fiction, and Forecast" to illustrate the "new riddle of induction". The exact definition of "blue" and "green" may be complicated by the speakers not primarily distinguishing the hue, but using terms that describe other color components such as saturation and luminosity, or other properties of the object being described.
Ultramarine
Ultramarine is a deep blue color and a pigment which was originally made by grinding lapis lazuli into a powder. The name comes from the Latin "ultramarinus", literally "beyond the sea", because the pigment was imported into Europe from mines in Afghanistan by Italian traders during the 14th and 15th centuries. Ultramarine was the finest and most expensive blue used by Renaissance painters. It was often used for the robes of the Virgin Mary, and symbolized holiness and humility. It remained an extremely expensive pigment until a synthetic ultramarine was invented in 1826. The pigment consists primarily of a zeolite-based mineral containing small amounts of polysulfides.
Thirteen Cents
Thirteen Cents is the debut novel of South African author K. Sello Duiker. It was published in 2000 to critical acclaim and immediate success in South Africa and abroad, winning the 2002 Commonwealth Writers Prize for Best First Book, Africa. The first edition of "Thirteen Cents" outside South Africa was published by Ohio University Press in 2013 as part of the Modern African Writing series with an introduction by Professor Shaun Viljoen. The novel is set in post-apartheid South Africa and depicts the brutal reality of South African street children. As a crime novel and bildungsroman, it follows the twelve-year-old orphan Azure and his efforts to survive on the streets of Cape Town amidst an underworld of gangsters, drug use, violence, and prostitution.
Characters of The Order of the Stick
This is a list of characters from the webcomic "The Order of the Stick" (OOTS). Celebrating and satirizing tabletop role-playing games and medieval fantasy, this tale of the eponymous fellowship of adventuring heroes is written and illustrated by Rich Burlew in a stick-figure style. Taking place in a magical world that loosely operates by the rules of the 3.5 edition "Dungeons & Dragons" (D&D), the comic follows the sometimes-farcical exploits of six adventurers as they strive to save the world from an evil lich. Much of the comic's humor stems from these characters either being aware of the game rules that affect their lives or having anachronistic knowledge of modern culture, which in turn is often used by the author to parody various aspects of role-playing games and fantasy fiction.
Red
Red is the colour at the end of the visible spectrum of light, next to orange and opposite violet. It has a dominant wavelength of approximately 625–740 nanometres. It is a primary color in the RGB color model and the CMYK color model, and is the complementary color of cyan. Reds range from the brilliant yellow-tinged scarlet and vermillion to bluish-red crimson, and vary in shade from the pale red pink to the dark red burgundy. The red sky at sunset results from Rayleigh scattering, while the red color of the Grand Canyon and other geological features is caused by hematite or red ochre, both forms of iron oxide.
Violet (color)
Violet is the color at the end of the visible spectrum of light between blue and the invisible ultraviolet. Violet color has a dominant wavelength of approximately 380-450 nanometers. Light with a shorter wavelength than violet but longer than X-rays and gamma rays is called ultraviolet. In the color wheel historically used by painters, it is located between blue and purple. On the screens of computer monitors and television sets, a color which looks similar to violet is made, with the RGB color model, by mixing red and blue light, with the blue twice as bright as the red. This is not true violet, since it is composed of multiple longer wavelengths rather than a single wavelength shorter than that of blue light.
1_Apprentice
Many different shades of blue!  I think I like teal shades of blue the best. 
0_Wizard
It's been an imporant color in art and decoration since ancient times apparently.  
Blue has been an important colour in art and decoration since ancient times.
chosen_Blue_0
Blue
chosen_topic_0_Blue
Final Symphony
Final Symphony is a symphonic concert tour first held at the Historische Stadthalle Wuppertal in Wuppertal (Germany) on May 11, 2013 and continuing to date. The concert tour features arrangements of video game music selected from the "Final Fantasy" series, specifically "Final Fantasy VI", "VII", and "X". It is divided into three acts: a symphonic poem for "VI", a piano concerto for "X", and a symphony for "VII". The concert is produced and directed by Thomas Böcker, with arrangements provided by Finnish composer and musician Jonne Valtonen, along with Roger Wanamo and "Final Fantasy X" composer Masashi Hamauzu with consultation from "Final Fantasy" composer Nobuo Uematsu.
Red
Red is the colour at the end of the visible spectrum of light, next to orange and opposite violet. It has a dominant wavelength of approximately 625–740 nanometres. It is a primary color in the RGB color model and the CMYK color model, and is the complementary color of cyan. Reds range from the brilliant yellow-tinged scarlet and vermillion to bluish-red crimson, and vary in shade from the pale red pink to the dark red burgundy. The red sky at sunset results from Rayleigh scattering, while the red color of the Grand Canyon and other geological features is caused by hematite or red ochre, both forms of iron oxide.
Blue
Blue is one of the three primary colours of pigments in painting and traditional colour theory, as well as in the RGB colour model. It lies between violet and green on the spectrum of visible light. The eye perceives blue when observing light with a dominant wavelength between approximately 450 and 495 nanometres. Most blues contain a slight mixture of other colors; azure contains some green, while ultramarine contains some violet. The clear daytime sky and the deep sea appear blue because of an optical effect known as Rayleigh scattering. An optical effect called Tyndall scattering explains blue eyes.
Ancient Greek art
Ancient Greek art stands out among that of other ancient cultures for its development of naturalistic but idealized depictions of the human body, in which largely nude male figures were generally the focus of innovation. The rate of stylistic development between about 750 and 300 BC was remarkable by ancient standards, and in surviving works is best seen in sculpture. There were important innovations in painting, which have to be essentially reconstructed due to the lack of original survivals of quality, other than the distinct field of painted pottery. Greek architecture, technically very simple, established a harmonious style with numerous detailed conventions that were largely adopted by Roman architecture and are still followed in some modern buildings.
Final Symphony II
Final Symphony II is a symphonic concert tour first held at the Beethovenhalle in Bonn, Germany on August 29, 2015 and performed through 2016. The concert tour features arrangements of video game music selected from the "Final Fantasy" series, specifically "Final Fantasy V", "VIII", "IX", and "XIII". It is divided into four acts, one per game, with the newest game, "Final Fantasy XIII", first, and the oldest, "V", last; all four arrangements are single-section arrangements, with the "IX" portion as a piano concerto. The tour is a follow up to "Final Symphony", a similar tour of orchestral arrangement performances from "Final Fantasy VI", "VII", and "X" beginning in 2013 and continuing to date.
Levantine pottery
Pottery and ceramics have been produced in the Levant since ancient times. The history of pottery in the region begins in the Late Neolithic period, sometimes known as Pottery Neolithic (PN) or occasionally, based on a supposed local sequence of the site of Jericho, Pottery Neolithic A. There is no good evidence for pottery production in Early Neolithic (Pre-pottery Neolithic/PP) times, but the existence of pyrotechnology that allowed humans to attain temperatures in excess of 1000 °C for reducing limestone to lime to make plaster, indicates a level of technology ripe for the discovery of pottery and its spread.
Merregnon Studios
Merregnon Studios is a company based in Dresden, Germany, founded by Thomas Böcker. It produces concerts of orchestral video game music, under the name Symphonic Game Music Concerts and other variants of the "Symphonic" brand, and markets recordings and albums of the concerts. Merregnon Studios was founded in 1999 by Thomas Böcker. Having spent time in Japan and as a lifelong fan of video game music, Böcker sought to bring orchestral video game music concerts to Europe and produce storytelling arrangements and scores based on video game material. The first example of his vision came with the first volume in the Merregnon CD series in 2000.
1_Apprentice
That makes sense.  In many early paintings of Mary, she is always wearing blue.
0_Wizard
It's one of the reasons you see blue/white China - Chinese artists used cobalt blue to color porcelain.
In the eighth century Chinese artists used cobalt blue to colour fine blue and white porcelain.
chosen_Blue_0
Blue
chosen_topic_0_Blue
Blue
Blue is one of the three primary colours of pigments in painting and traditional colour theory, as well as in the RGB colour model. It lies between violet and green on the spectrum of visible light. The eye perceives blue when observing light with a dominant wavelength between approximately 450 and 495 nanometres. Most blues contain a slight mixture of other colors; azure contains some green, while ultramarine contains some violet. The clear daytime sky and the deep sea appear blue because of an optical effect known as Rayleigh scattering. An optical effect called Tyndall scattering explains blue eyes.
China painting
China painting, or porcelain painting, is the decoration of glazed porcelain objects such as plates, bowls, vases or statues. The body of the object may be hard-paste porcelain, developed in China in the 7th or 8th century, or soft-paste porcelain (often bone china), developed in 18th-century Europe. The broader term ceramic painting includes painted decoration on lead-glazed earthenware such as creamware or tin-glazed pottery such as maiolica or faience. Typically the body is first fired in a kiln to convert it into a hard porous bisque. Underglaze decoration may then be applied, followed by glaze, which is fired so it bonds to the body.
Iznik pottery
Iznik pottery, or Iznik ware, named after the town of İznik in western Anatolia where it was made, is a decorated ceramic that was produced from the last quarter of the 15th century until the end of the 17th century. İznik was an established centre for the production of simple earthenware pottery with an underglaze decoration when, in the last quarter of the 15th century, craftsmen in the town began to manufacture high quality pottery with a fritware body painted with cobalt blue under a colourless transparent lead glaze. The designs combined traditional Ottoman arabesque patterns with Chinese elements.
Blue and white pottery
"Blue and white pottery" (Japanese: 染付 "sometsuke", ) covers a wide range of white pottery and porcelain decorated under the glaze with a blue pigment, generally cobalt oxide. The decoration is commonly applied by hand, originally by brush painting, but nowadays by stencilling or by transfer-printing, though other methods of application have also been used. The origin of this decorative style is thought to lie in Iraq, when craftsmen in Basra sought to imitate imported white Chinese stoneware with their own tin-glazed, white pottery and added decorative motifs in blue glazes that had been developed by preexisting Mesopotamian cultures.
Cobalt
Cobalt is a chemical element with symbol Co and atomic number 27. Like nickel, cobalt is found in the Earth's crust only in chemically combined form, save for small deposits found in alloys of natural meteoric iron. The free element, produced by reductive smelting, is a hard, lustrous, silver-gray metal. Cobalt-based blue pigments (cobalt blue) have been used since ancient times for jewelry and paints, and to impart a distinctive blue tint to glass, but the color was later thought by alchemists to be due to the known metal bismuth. Miners had long used the name "kobold ore" (German for "goblin ore") for some of the blue-pigment producing minerals; they were so named because they were poor in known metals, and gave poisonous arsenic-containing fumes when smelted.
Chinese ceramics
Chinese ceramics show a continuous development since pre-dynastic times and are one of the most significant forms of Chinese art and ceramics globally. The first pottery was made during the Palaeolithic era. Chinese ceramics range from construction materials such as bricks and tiles, to hand-built pottery vessels fired in bonfires or kilns, to the sophisticated Chinese porcelain wares made for the imperial court and for export. Porcelain is so identified with China that it is still called "china" in everyday English usage. Most later Chinese ceramics, even of the finest quality, were made on an industrial scale, thus few names of individual potters were recorded.
Jingdezhen porcelain
Jingdezhen porcelain (Chinese: 景德镇陶瓷) is Chinese porcelain produced in or near Jingdezhen in southern China. Jingdezhen may have produced pottery as early as the sixth century CE, though it is named after the reign name of Emperor Zhenzong, in whose reign it became a major kiln site, around 1004. By the 14th century it had become the largest centre of production of Chinese porcelain, which it has remained, increasing its dominance in subsequent centuries. From the Ming period onwards, official kilns in Jingdezhen were controlled by the emperor, making imperial porcelain in large quantity for the court and the emperor to give as gifts.