Info on Cats: Are cats colour blind?

I was wondering if my cat couldn't see the different colours in my home, but in actual fact, cats can see different colours, but not very clearly. They see colours vaguely. They can see your blue carpet on the floor but it may be a little dull in their eyes, but to us that blue is radiant. So there is a significant difference between us and cats. In the 1940's scientists thought cats couldn't see different colours, only grey. But further research revealed the amazing fact of cats being able to see colours. Of course their eyes are able to see in dim lighting, so the need for colour is not mandatory for cats. Their eyesight is able to pick up movement that we couldn't see. For example, if a mouse scurries through the bushes at night, the cat will hear and most likely see it, but we would not even have noticed. It is just amazing how cats can have all these amazing qualities. What do you think, did the cat's eyesight come by chance or was it created?