Coloring tip: It's a fact. The longer your hair is the older the ends are. Okay no news there. What may be news is that this makes them more porous and open to accepting hair dye. Which is why you want to get to them last if coloring at home. Otherwise they may end up darker than the rest of your strands leaving you with a final result that is well, interesting looking. Just not in a cute and sexy way.
Hair color ideas are not stand alone thoughts and need to be combined with your skin tone and personality to give you the right match. Never copy someone else's hair color idea blindly as it just might be completely wrong for you. If you are coloring your hair for the first time, you can seek professional help at the salon. Otherwise, the internet is a good place to start with as well: