When you select an account that has been added to a visualization, you have the option to select a color. By default, there are 10 Custom Colors that can be changed to the color of your choosing such as your company colors.
To change the default colors that display on your data visualizations, go to Administration > Dashboard Preferences > Themes. Select a drop-down for one of the colors and either choose a color from the color picker or enter a Hex value. You can choose up to ten colors and the order of the colors in the custom theme determine the order they are applied to charts, such as data series and conditional formatting rules.
You can reset the colors back to the defaults by clicking on Reset.
Any chart element set with a custom color will automatically change to the color specified in the custom theme. You must refresh your dashboard to see the color changes.