Did you know that there exists 'Zones of Regulation' according to colour psychology that helps schools to control and regulate certain impulses and emotions? This concept is the brainchild of Leah Kuypers and it is used to help individuals relate different zones to different modes of behaviours in various scenarios. The Red Zone equals a heightened state of emotion; The Green Zone equals a calm, yet alert state. The Yellow Zone is a more excitable state of alertness than green, but not as explosive as red. Finally, the Blue Zone equals a feeling of passivity and feeling low.

If you are repainting your living room, choose warm colours such as red, orange, yellow or earthy tones like brown and beige because these shades stimulate and encourage conversation. According to experts, you are more likely to feel comfortable in a room painted in these shades if you're expected to socialise and step out of your comfort zone a bit. And the opposite applies for bedrooms - since they are a place one retires to for quiet and relaxation, it is better to paint them in cooler tones of blues and greens.

The only thing that can make a big, shiny rock prettier is a dash of vivid colour. Tourmalines are semi-precious gemstones that get their name from the Sinhalese/Tamil word 'turmali.' The stone exists in a variety of colours, from black, blue, green, rust, yellow and a few more, but in 1988, exquisitely bright tourmalines were discovered in Paraíba, Brazil. They created a stir in markets and the prices of tourmalines shot up. At present, the name Paraíba Tourmaline is used to refer to any tourmaline regardless of colour, and the blue-green tourmalines are the most expensive type.

Garnet is known to have 6 different sub-categories of stones according to their chemical composition; these are Pyrope, Spessartine, Grossular, Uvarovite and Andradite. Out of these, Andradite species further includes two other rarely seen varieties - Topazolite and Melanite. Melanite is a completely opaque black stone which was not considered as a precious gemstone until quite recently but since the rising interest in black gemstones in general, they are now popularly used as gemstones. Till date, melanite has been found in Italy, Greenland, Russia, Ukraine, Kazakhstan, Mexico and the USA!

We're aware of being able to spot and enjoy hundreds of different colours in nature and each one seems to have dozens of shades. But how exactly are we able to see and understand the varying hues in nature's creations? Scientists believe that the hues on birds, animals and insects can be seen due to either their structural colour or pigments. The structural colour is produced by light interacting with microscopic patterns on the surface of the creatures such as beetles, while pigments found in the hair or skin absorb light such as in parakeets.

Were you aware that there exists a type of frog with a multi-hued body? The Poison-Dart frogs, native to Central and South America, have brightly coloured bodies that mark them as aposematic. Aposematism refers to a concept of 'warning by colour' and is a trait developed in and adapted to by amphibians and animals marking their poisonous nature to predators. The frogs are usually bright yellow, electric blue, vivid green or orange. Some frogs also have various patterns all over their backs or simpler ones like stripes, spots, etc.