Red, Blue, Green

Hi too nitinnair89! :) Well that's a new information, are you really sure that animals don't see colors or are you referring to a specific animal? I don't think all animals can't see colors, maybe some does like bat(obviously, it's blind). Base on my observation thou, like in movie, when the camera view is shift to the animals view, it's still colored and like for insects multiple sight, they do that too in camera so same goes with animals. However, going back to your color question, without colors our world will be lifeless to our eyes. Color describe a thing, without color everything would be boring. And also, sometimes color is use to describe our feelings so it's really important. :)

i only know that the rainbow color has VIBGYOR and e can see them in rainbow. I don't know that only red ,blue and green colors only exists.Animals cannot recognize colors? i don't this point ,then how come a bull become so fearful when it sees the red color?

The three colours - red, blue and green - are called the 'primary colours' because our eyes have three types of colour receptors which are sensitive to colours in those three areas of the spectrum. That is why all the colours we can see can be said to be made up of those three colours. In fact, it is not true: the spectrum is continuous and each wavelength is a different colour, so there are really countless different colours, some of which we cannot tell the difference between with our eyes. It is a complete myth that animals cannot see colours. Many animals have colour vision but it is usually somewhat different from ours. Some animals (notably some insects, such as bees) can see colours which we cannot even detect. A flower, for example, looks very different to a bee than it does to us because a bee can see well into the ultra-violet part of the spectrum and some flowers have areas which strongly reflect these wavelengths. Horses, cows and other grazing animals have eyes which are adapted to seeing differences in grass and foliage which we cannot see so well but, on the other hand, their eyes are not so able to distinguish reds and browns (they can see these colours but they all tend to look the same). Dogs and cats are less able to distinguish reds and yellows than us but, on the other hand, they can see much better in very low light than we can. Many birds have much better colour vision than we do (if you think about it, those with very colourful plumage have developed it because other members of their species can see it and because it is essential to their social behaviour).

It is not red, blue, and green. It is red, blue, and yellow. I know my main colors and they are used in a lot of things as in TV's, there are only red, blue, yellow in TV's but one TV company broke off of that to include green saying it gives a better picture. So now you know your main colors. :)

Red, blue and yellow. I think are the main colors. Blue and yellow when mixed give green. Whoaa am I right. i get lost here. But true without colors, things are black and white and we can not see the difference between ripe and rotten fruits. But I like rainbows and colors they are happy. :D