What colour is the sun?
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The sun actually glows white-hot, so we can't look at it with the naked eye. When we do manage to get a glimpse, it appears yellowish. When it's rising or setting, it may appear orange or reddish, because of the bending of light rays.
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The aurora borealis is an atmospheric phenomenon. \n\nThe sun's Solar wind contains a lot of electrons and other charged particules which then hit atoms in the upper atmosphere. The collision energises the atoms and causes electrons in the atoms to shift energy levels, and release energy as light. \n\nThe colours you see are due primarily to solar wind particles energising oxygen and nitrogen atoms.
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largely, for the same reason the sky is blue.  the amount that light is scattered is proportional to its frequency to the fourth power.  thus, blue light is scattered most strongly, and the sky appears blue.  at sunset (and sunrise), we're looking directly at the sun, and all the blue light has been scattered away.  other colors (yellow and green, mainly) are absorbed by the water vapor in the air.  the orange and red, being the smallest visible frequencies, are what come through the strongest.
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http://en.wikipedia.org/wiki/Sun
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Well man,\n   A cute question. One question to you too. What is colour? well it is the reflected light of a specific wavelength. So the coulor that your atom would reflect will give the atom its colour. Simple yet beautiful
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The blue color of the sky is due to Rayleigh scattering. As light moves through the atmosphere, most of the longer wavelengths pass straight through. Little of the red, orange and yellow light is affected by the air. \n\nHowever, much of the shorter wavelength light is absorbed by the gas molecules. The absorbed blue light is then radiated in different directions. It gets scattered all around the sky. \nOn Earth, the sun appears yellow. If you were out in space, or on the moon, the sun would look white. In space, there is no atmosphere to scatter the sun's light. On Earth, some of the shorter wavelength light (the blues and violets) are removed from the direct rays of the sun by scattering. The remaining colors together appear yellow. \n\nAs the sun begins to set, the light must travel farther through the atmosphere before it gets to you. More of the light is reflected and scattered. As less reaches you directly, the sun appears less bright. The color of the sun itself appears to change, first to orange and then to red. This is because even more of the short wavelength blues and greens are now scattered. Only the longer wavelengths are left in the direct beam that reaches your eyes.
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Well, what color is fire?\n\nIt's a combination of red, yellow, and orange...\n\nIf you just want to make a regular "normal" sun instead of getting technical about it... Yellow. (Maybe with some orange shading!)
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The Sun is class G2V. A yellow dwarf.
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black is the absense of light\n\nwhite is the combination of all colors
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using simple physics\n\nThe blue color of the sky is due to Rayleigh scattering. As light moves through the atmosphere, most of the longer wavelengths pass straight through. Little of the red, orange and yellow light is affected by the air.\n\nthe grass is green because the other colors are absorbed and only green is reflected. Grass and most other plants are green because they contain a pigment known as chlorophyll.\n\nSun isn't really yellow. The color yellow is a purely human interpretation of a collection of radiation that hits the retinae of our eyes and gets processed by our visual cortex.
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Particles in the air refract the white light of the sun into the spectrum.  The sky is blue because blue gets through the easiest.
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what color are your eyes?
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WHY IS THE SUNSET RED?\nAs the sun begins to set, the light must travel farther through the atmosphere before it gets to you. More of the light is reflected and scattered. As less reaches you directly, the sun appears less bright. The color of the sun itself appears to change, first to orange and then to red. This is because even more of the short wavelength blues and greens are now scattered. Only the longer wavelengths are left in the direct beam that reaches your eyes.
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Actually there is no colore\nAnd we see it blue because of light reflex in the sky.
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Our Sun is a normal main-sequence G2 star, one of more than 100 billion stars in our galaxy.\n\ndiameter: 1,390,000 km.\nmass: 1.989e30 kg\ntemperature: 5800 K (surface)\n15,600,000 K (core)
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1. Why the sky is blue.\nWhen light passes through a medium with molecules much smaller than the wavelength, it is scattered. You can understand it so: the light begins by going as a beam "forward". It gets absorbed for a moment by a molecule and then emitted again in whatever direction. This effect is more effective when the wavelength is shorter. Blue light has a wavelength ~2 times shorter than red light and gets scattered 16 times as effectively. So the beam coming directly from the sun is deprived of blue =>thus it is yellow (or red if it is sunset and it has passed a thick layer of atmosphere (geometry)). From all other directions we see the light that was going towards other points on the Earth. The yellows and reds went on and the blue was sent in other directions, including towards us.\n\n2. Why the grass is green.\nGreen plants use light to make food. The light is absorbed by chlorophyll (two types of it, too and a bit different, but no matter). Chlorophyll absorbs violet, blue, orange and red light. What we see is what was not absorbed, but reflected. If you take the aforementioned colours out of the white light spectrum, you get a mixtureof green and yellow. And green is the colour our eyes see best. Thus - green grass.\n\nI hope I've been clear
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that we can see?  The sun.