You will need to consider light. Does the room have a window? Is the lighting artificial or natural? Is the room a sunny south facing space? What about shadows and mood lighting? I can't stress the importance of using tester pots before painting the area. You might test the paint in a showroom or in the DIY centre but the likelihood is that it will look totally different on your wall. Make sure that if you are painting a vast area that you buy paint from the same batch. Even the same colour may vary from tin to tin. I adore Farrow and Ball paint. If you haven't used it before it is certainly worth a look. If you are decorating on a budget then you can use tester pots without going to the expense of buying a regular sized tin. I have used two tester pots to decorate one feature wall in my son's bedroom.
Have a think about whether the colour will be a complimentary accent splash, a dominant feature wall or a background neutral palette. You will be able to do this more successfully if you create a mood board before starting. Consider what other colours and materials you will use in the room. Personally, I am colour averse. My favourite palette is a range of taupes, greys, creams, black and white. Can this palette become boring? Not if you use texture within the room. Generally speaking bronzes and golds compliment taupes while silver and glass compliment greys. These are all important design choices if you are to pull a room together. If you are still unsure where to start then search the Internet and browse magazines and print off room settings that you love. You should start to see a common colour theme that you can use as your design inspiration.
So, over to you. What are your thoughts on the pink and blue theme? Let's have a look at your designs. I'd love to hear from you and see your photos.
PS. With a baby girl due to be born any day now, only time will tell whether I will succumb to the pink obsession. Place your bets!