The popular smokey eye look is fairly easy to do with your own makeup and you only need a few supplies, blend well and read more in this article with details:
http://www.infobarrel.com/Smokey_Eye_-_Eye_Make_Up_Tips
You can also see a speedy video how to do an intense smokey eye here:
http://youtu.be/OFAfx_oUCjc
Generally, a smoky eye makeup look is done with dark colors. Dark, charcoal greys are the traditional choice but bronze colors or browns also make for a nice, smoky look. Colored smoky eyes are also popular, so maybe try a navy or purple smoky eye. It's more about the technique used than the colors so try experimenting!
Compound eyes are used for shapes and colors
I think at a certain age there eyes get used to colors, like when you wake up and your eyes get used to the light.
"Rainbow eyes" are not a natural eye color but rather a term used to describe eyes that appear to have different colors in them due to the way light is reflecting. However, some people may have a condition called heterochromia where their irises are different colors, which could potentially create a similar effect.
In ART, they are red, blue, and yellow. In LIGHT, they are red, blue, and green (combined in various hues to create the colors as in a computer monitor or television. * The three composite colors used in printing (besides black) are yellow, cyan, and magenta.
If your question is "what colors cannot be created through mixing" the answer would be blue, red and yellow. These three colors are Primary colors, they are used to create Secondary colors, such as green, orange, and purple. Then, by mixing secondary and primary colors you can create Tertiary colors, such as red-orange, blue-green, etc. The Tertiary colors then mixed with either Primary colors or Secondary colors create the rest of the color wheel.
The primary colors of pigment are cyan, magenta, and yellow. These colors are used in printing and mixing to create a wide range of colors.
blue, green, cyan
RGB colors are a combination of red, green, and blue light that create a wide range of colors on electronic devices like screens. Primary colors, on the other hand, are the three colors (red, yellow, blue) that are used to mix and create all other colors in traditional art and design.
Soft colors typically refer to pastel shades that are gentle on the eyes and evoke a sense of calmness. Common soft colors include light pinks, baby blues, soft greens, lavender, and pale yellows. These hues are often characterized by low saturation and high brightness, giving them a muted and soothing appearance. They are commonly used in design and decor to create a tranquil atmosphere.
Red, Green and Blue - varying amounts of brightness are used to create over 65,000,000 colours.
blue, green, cyan