Orange symbology (from Wiki)

Academia

• In the United States and Canada, orange regalia is associated with the field of engineering.

Arch in Arches National Park, Utah.

Commercially

TNT post sign in the Netherlands

• Orange is the primary colour in the logo for the United States company Home Depot.

Geography and history

• Orange is the national colour of The Netherlands, because its royal family of Orange-Nassau used to own the principality of Orange (the title is still used for the Dutch heir apparent). There is no etymological connection between orange (the fruit and colour) and Orange (the name of the principality), and the similarity is fortuitous. (See the page on Orange (word) for more information.) In modern Dutch society however, the Dutch word oranje, 'orange' is often associated with the reigning royal house of the Netherlands. Oranjezonnetje ('Orange Sun') designates good weather on the Queen's birthday, April 30. Orange is the colour of choice for many of the national sports teams and their supporters. The nickname of the Dutch national football team is Oranje, the Dutch word for orange. Oranjegekte ('Orange Craze') signifies the inclination of many Dutchmen to dress up in orange colours during soccer matches. In the modern flag of the Netherlands, red substitutes the original orange, but on royal birthdays, the flag has an additional orange banner. Most geographical usages of the word orange can be traced back to Dutch maritime power in the 17th century.
• In Ireland the use of orange dates from the reign of William of Orange, the Protestant English king (1689-1702), a Dutch stadholder and the great-grandson of William the Silent.

Linguistically

• People whose natural hair colour is metaphorically described in English as being red, i.e. redheads, actually have hair that averages a burnt orange colour.
• Orange is often quoted (along with Purple and Silver) as a word that doesn't rhyme with any other word in the English language. This is debatable - see Orange (word)#Rhyme. However, the Oxford Rhyming Dictionary does show both these words as having half-rhymes (such as lozenge with orange and salver with silver).
  In a children's book of verse, in a poem titled "Color," there are these lines:

What is red? a poppy's red, in its barley bed.

What is orange? Why, an orange--just an orange!

Medically

• A woman named Susan Hogan was born with an extra set of cones that are sensitive in the orange range, as well having the red, green, and blue cones that humans with normal colour vision (i.e. trichromats) possess. She is therefore classified as a tetrachromat, but her extra type of cone is an orange cone instead of the ultraviolet cone possessed by animals such as birds who are tetrachromats in nature. It is estimated that while normal humans can see about 1,000,000 different colours, tetrachromats such as Ms. Hogan can see 100,000,000 different colours. This is because each additional type of cones reacts with the other types of cones in such a way that an addition of a new type of cone means an organism can see 100 times as many colours. (This means that a pentachromat would be able to see 10,000,000,000 (ten billion) different colours.) ^[9]

Politically

• Orange is the national colour of the Netherlands, referring to the royal family, the House of Orange-Nassau. Orange was seen on its original flag (until the middle of the 17th century) and nowadays a pennant may be attached to the red, white and blue national flag. (See below at: Geography and history)
• Orange is the contrasting colour of blue and is highly visible against a clear sky. Therefore, shades of orange such as safety orange are often used in high visibility clothing and other safety equipment and objects.
• Orange, white, and green are the national colours of the Republic of Ireland, Niger, Côte d'Ivoire, and India.
• In the United States Army, orange is the colour of the United States Army Signal Corps.
• The U.S. Department of Homeland Security's code orange on its terror threat scale represents a high risk, second highest to severe.
• Prisoners incarcerated in many American jails and prisons are made to wear orange jumpsuits so they will be easy to see if they try to escape.
• Deluxe International orange is the colour of the paint on San Francisco's Golden Gate Bridge
• The U.S. Manual on Uniform Traffic Control Devices specifies orange for use in temporary and construction signage.
• Orange was the rallying colour of the 2004 – 2005 Orange Revolution in Ukraine and has thus become a colour symbolising opposition to tyranny around the world.
• Orange is sometimes associated with various Christian democratic and populist parties.
• Orange was used as a rallying colour by Israelis (such as Jewish settlers) who opposed Israel's unilateral disengagement plan in the Gaza Strip and the West Bank in 2005

Religious and metaphysical

• Orange in general represents Hinduism in the flag of Sri Lanka. Hindu swamis traditionally wear orange robes. The significance of orange as the colour for Hindu swamis is commonly thought to be connected to the idea that orange symbolizes fire. Renunciates' fiery ocher robes display outwardly the inner transformation that is happening - the burning of ego, their former selves, and their personal wants. Also, the saffron stripe in the Indian flag signifies courage, sacrifice and the spirit of renunciation.
• Orange is used to symbolically represent the second (Swadhisthana) chakra. ^[10]
• Psychics who claim to be able to observe the aura with their third eye report that an orange aura is associated with intellectual ambition or stubbornness.^[11]
• In the metaphysics of the New Age Prophetess, Alice A. Bailey, in her system called the Seven Rays which classifies humans into seven different metaphysical psychological types, the fifth ray of concrete science is represented by the colour orange. People who have this metaphysical psychological type are said to be on the Orange Ray. ^[12]

Social

Orange heraldic tincture, in colour and monochrome representations

• In English heraldry, orange is considered synonymous with the tincture tenne. However, its use as a heraldic tincture is relatively rare, as it is considered a "stain" (a deprecated tincture) by some. In continental heraldry, tenne is more often deemed to denote a burnt orange colour.
• The colours orange and black represent the holiday Halloween (31 October) because orange is the colour of pumpkins and black is the colour of night and is associated with doom, despair and darkness.
• The colours orange and brown represent the United States holiday Thanksgiving.
• Orange is the favourite colour for people to wear to rave dances.^{[citation needed]}
• Due to its brightness, orange is used in the construction industry on road signs and safety jackets to warn passers-by of the pending dangers ahead.