BLONDE :
           If you would love to be blonde, talk the process through with your colorist (or stylist) before you go for it. It should be relatively painless on virgin dark brown hair, but if your hair has been permanently tinted then the process will become a long saga.
Never attempt this kind of dye job on your own for the first time.
RED :
     Red is the ultimate sexy shade, for color that cries out for attention. Hair holds on to red-toned pigments well, so going copper-top can be easy for most people.
But be warned - if you are blonde you will usually have to go two or three shades darker than your natural color to achieve a rich red (brunette), and it's not easy to reverse it.
BROWN :
          Brunette is always a safe choice as it suits nearly every girl in town. Varying the shade with highlights can achieve a huge range of looks. From chocolate brown and bronze shades to honey or dark blonde, combinations of natural tones gives incredible shine as darker-pigmented tints add condition to your hair.
BLACK :
          This is by far the easiest color to accomplish because the molecules in black tints are larger and will cover all hair types very effectively. Caution is needed when using black as it only tends to look good on people with darker and olive black as it only tends to look good on people with darker and olive skin tones. it's great for getting the goth look, but definitely not for your granny.