Instead of starting from scratch, you can use one of our color charts. Go to the shared charts page and pick the chart you want by clicking on its name. The chart will open and you can edit it all you like.
Don't worry, when you click save you will not be overwriting the shared chart.
We'll ask you to register or log in if you haven't already, and the chart will be saved to your own personal chart list. Come back any time you like and play with it.