Default chart colour

First, create a chart and configure it to exactly the way you want it to look. Colors, label alignment, number formats—set all of these just the way you like them. Select Chart | Chart Type from the Insert menu and click the Custom Types tab. Click the User-defined option at lower left, and click the Add button that appears. Enter a name and description for your chart type and click OK. If you wish, click the Set as default chart button. You can create as many custom chart types as you like—you may want to design your own versions of the line chart, bar chart, and pie chart, at least.