Define "Styles" for graphs
It's simple to create the color schemes to be used for the graphs. Draw a number of InDesign text boxes on a page. Apply different colours to the fill and/or the stroke. Apply the stroke size, and enter a few letters within the text boxes, and apply the font name and style.
Save the Chart Style
Select all the boxes, and press the Save icon to the right of the "Styles" popup menu. Enter a name for the style and you are done.
Preview the Chart Style
While holding down the alt-key on the keyboard and selecting the style you want to preview in the Chart Style popup menu, will rebuild a number of boxes on the active page, equivalent to the saved number of colours in the style.